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(Stone)Mason Variation

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I do not like much the Moai set, with its big pieces and much look-alike faces, it is not immediate to distinguish minor pieces and rooks, but the stone works are very beautiful.

The game arises as a Mason variation of the Queen's Pawn game, with a bishop placed in f4 and a balanced central opening phase. After  7 moves, Black has three pieces aiming to the precious center square e4, White got two defending, and one of these, the knight in c4, would gladly attack Black Queen's Pawn in d5. Black has castled Queen-side, so White can lighten his grip on the center pinning the knight against his Queen. Black puts the question to the bishop, but it just draws back along the queen's rook file, keeping its pin. Thus Black is forced to move his Queen in the King's file, if he wants to free his Knight to move, and that is so. While his concentration of strength is much more now along King's file - he can field 4 pieces to think about an attack, Central Pawn, Bishop, Knight, Queen, his pressure on Queen's file is not as strong as he thinks, since even if the Knight is free from the pin, White has still Queen, Knight and King's Pawn defending d4. White King's Pawn effectiveness is only apparent: in truth, it can defend nothing, since enemy's Queen is pinning it against the King. Black knows this, and sounds his trumpets at move 10, beginning the offensive: Knight takes d4, Queen takes knight.
Hence the offensive seems promising, Black did not ponder that, since he moved Queen's Rook's Pawn to put the question to White's Bishop at move 8, now the pawn structure of his long castling is unsafe, and an enemy Queen standing in central square d4 sees this as an unresistable opportunity to threat a mate.
Black moves pawn g6, to protect a bishop from a knight's offensive on the king side, so there goes White's lady: Queen a7, threating for mate.
Black plays Knight d7, the central offensive can wait and mate is averted for now. White's Bishop takes d7, check, Black King must come out of hiding, so now is the best moment for White to castle queen-side and have a rook on Queen's file, pinning the pawn. Black's chances are fewer turn after turn.

Some aftershocks, to take out from the field and exchange minor pieces, destabilize Black Queen's position, and a bishop in c7 ends the story.

1. d4 d5  2. Bf4 Bf5  3. Nc3 Nf6  4. f3 Qd7  5. e3 Nc6  6. Bb5 O-O-O  7. Nge2 h6  8. h4 a6  9. Ba4 Qe6  10. Ng3 Nxd4  11. Qxd4 g6  12. Qa7 Nd7  13. Bxd7+ Kxd7  14. O-O-O Bg7  15. Nxf5 Qxf5  16. g4 Qe6  17. Rxd5+ Ke8  18. Bxc7 Rxd5  19. Nxd5 Qxd5  20. Rd1 Qxa2  21. Rd8#

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Danone [author] 11 Dec, 2020 @ 4:33pm

hello denism77, usually it works fine, a few times recently it went bugged to me, out of sync

denism77 11 Dec, 2020 @ 2:55pm

the timer doesn't work in this game

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