MESON Chess Problem Database

Problem Display
PID: 37146 (2b2b2/1pP2Qpn/pP1kP1p1/P5Pp/3NP2K/3N4/8/8 w - - 0 1)

Formanek, Bedrich

1st Prize, Lud TT, 1954

2b2b2/1pP2Qpn/pP1kP1p1/P5Pp/3NP2K/3N4/8/8

#2

10 + 9

3105 FIDE Album (1945-1955) 1964

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe6
      • 2.Qxe6#
    • 1...Bd7
      • 2.Qxd7#
    • 1...Be7
      • 2.Qf4#
    • 1...Sxg5
      • 2.Qxf8#
    • 1...Sf6
      • 2.Qxf8#
  • Tries
    • 1.Kg3?
      • 1...Bxe6
        • 2.Qxe6#
      • 1...Sxg5
        • 2.Qxf8#
      • 1...Bd7
        • 2.Qxd7#
      • 1...Be7
        • 2.Qf4#
      • 1...Sf6
        • 2.Qxf8#
      • 1...h4+!
    • 1.Qe8?
      • 1...Bxe6
        • 2.Qxe6#
      • 1...Sxg5
        • 2.Qxf8#
      • 1...Bd7
        • 2.Qxd7#
      • 1...Sf6
        • 2.Qxf8#
      • 1...Be7!
  • Keys
    • 1.e7!
      • threat
        • 2.e8S#
      • 1...Kd7
        • 2.exf8Q#
        • 2.exf8B#
      • 1...Bxe7
        • 2.Qd5#
      • 1...Bd7
        • 2.e5#
      • 1...Sf6
        • 2.exf8Q#
        • 2.exf8B#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • B(h);OGATE,XP(H)::QAR1(J),XB(h)
    • B(h);N_GUARD::QAR1(J),XB(h)
    • B(i);P_PINP(F),SBLOCK::QAB(J)
    • S(g);N_GUARD,XP(F)::QAB(J),XB(i)
    • S(g);N_GUARD::QAB(J),XB(i)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Vars
        • B(h);OGATE,XP(H)::QAR1(J),XB(h)
        • S(g);N_GUARD,XP(F)::QAB(J),XB(i)
        • B(h);N_GUARD::QAR1(J),XB(h)
        • B(i);SBLOCK::QAB(J)
        • S(g);N_GUARD::QAB(J),XB(i)
      • Refutation
        • P(a);CHECK
    • Try
      • Q(J);
      • Vars
        • B(h);OGATE,XP(H)::QAR1(J),XB(h)
        • S(g);N_GUARD,XP(F)::QAB(J),XB(i)
        • B(h);N_GUARD::QAR1(J),XB(h)
        • S(g);N_GUARD::QAB(J),XB(i)
      • Refutation
        • B(i);P_PINP(F)
  • Actual
    • P(H);
    • Threat
      • P=S
    • Vars
      • K(c);P-FLIGHT::PXB(i)=Q
      • B(i);P_PINP(F),SBLOCK,XP(H)::QAR1(J)
      • B(h);SBLOCK::P(C)
      • S(g);N_GUARD::PXB(i)=Q
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