MESON Chess Problem Database

Problem Display
PID: 114162 (4RQ2/2p3N1/2N2BR1/8/4pkp1/2p4B/1pP1Pp1p/1K1n3n w - - 0 1)

Stocchi, Ottavio

Xadrez Brasileiro, 1937

4RQ2/2p3N1/2N2BR1/8/4pkp1/2p4B/1pP1Pp1p/1K1n3n

#2

10 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Se3
      • 2.Be5#
    • 1...Sg3
      • 2.Bg5#
    • 1...e3
      • 2.Bh4#
      • 2.Rxg4#
    • 1...gxh3
      • 2.Bd4#
    • 1...g3
      • 2.Bd4#
      • 2.Bg5#
  • Tries
    • 1.Sf5?
      • threat
        • 2.Be5#
        • 2.Bg5#
      • 1...gxh3
        • 2.Be5#
      • 1...e3
        • 2.Bg5#
      • 1...Kxf5!
    • 1.Sh5+?
      • 1...Kf5
        • 2.Rg5#
      • 1...Ke3!
    • 1.Qc5?
      • threat
        • 2.Sh5#
        • 2.Be5#
        • 2.Rxg4#
      • 1...gxh3
        • 2.Sh5#
        • 2.Se6#
        • 2.Be5#
        • 2.Qg5#
      • 1...Se3
        • 2.Sh5#
        • 2.Be5#
        • 2.Qe5#
      • 1...Sg3
        • 2.Se6#
        • 2.Be5#
        • 2.Bg5#
        • 2.Rxg4#
        • 2.Qg5#
      • 1...e3
        • 2.Sh5#
        • 2.Rxg4#
        • 2.Qe5#
      • 1...g3
        • 2.Sh5#
        • 2.Se6#
        • 2.Be5#
        • 2.Bg5#
        • 2.Rg4#
        • 2.Qg5#
      • 1...Kg3!
  • Keys
    • 1.Bf1!
      • 1...Ke3
        • 2.Bg5#
      • 1...Kg3
        • 2.Sh5#
      • 1...Se3
        • 2.Be5#
      • 1...Sg3
        • 2.Bg5#
      • 1...e3
        • 2.Bh4#
      • 1...g3
        • 2.Bd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • S(a);SBLOCK::QAR(J)+B(F),DCHECK
    • S(b);SBLOCK::QAR(J)+B(F),DCHECK
    • P(i);XB(D)::QAR(J)+B(F)
  • Tries
    • Try
      • S(H);
      • Threat
        • DUALS(2)
      • Vars
        • P(i);XB(D)::B(F)
        • P(g);::B(F)
      • Refutation
        • K(h);P-FLIGHT,P_SPINP(i),XS(H)
    • Try
      • S(H);CHECK
      • Vars
        • K(h);P-FLIGHT,P_SPINP(i)::R1(G)
      • Refutation
        • K(h);P_SPINP(g),S_FLIGHT
    • Try
      • Q(J);
      • Threat
        • DUALS(3)
      • Refutation
        • K(h);P_SPINP(i),S_FLIGHT
  • Actual
    • B(D);
    • Vars
      • K(h);P_SPINP(g),S_FLIGHT::B(F)
      • K(h);P_SPINP(i),S_FLIGHT::S(H)
      • S(a);SBLOCK::QAR(J)+B(F),DCHECK
      • S(b);SBLOCK::QAR(J)+B(F),DCHECK
      • P(g);::QAR(J)+B(F)
      • P(i);::QAR(J)+B(F)
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