MESON Chess Problem Database

Problem Display
PID: 211169 (B7/n2p2P1/2r1Np1K/3kP3/1P4PN/5P2/7Q/2R5 w - - 0 1)

Maleika, Gerhard

The Problemist, 1985

B7/n2p2P1/2r1Np1K/3kP3/1P4PN/5P2/7Q/2R5

#2

11 + 5

SOLUTION

  • SOUND
  • Tries
    • 1.Sf5?
      • threat
        • 2.Sc7#
      • 1...Kxe6
        • 2.g8Q#
        • 2.g8B#
      • 1...fxe5
        • 2.Qa2#
      • 1...dxe6
        • 2.Rc5#
      • 1...Sb5!
    • 1.Qd2+?
      • 1...Kxe5
        • 2.Re1#
      • 1...Kxe6!
    • 1.g8Q?
      • threat
        • 2.Rc5#
      • 1...fxe5
        • 2.Qd2#
      • 1...dxe6
        • 2.Qd8#
      • 1...d6!
  • Keys
    • 1.Sg6!
      • threat
        • 2.Qa2#
      • 1...Kxe6
        • 2.g8Q#
        • 2.g8B#
      • 1...fxe5
        • 2.Qxe5#
      • 1...dxe6
        • 2.Qd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);
      • Threat
        • S(H)
      • Vars
        • K(a);N_SPINR(b),S_FLIGHT,XS(H)::P=Q
        • P(c);P_PINS(H),SBLOCK,XP(G)::QAB(B)
        • P(e);SBLOCK,XS(H)::R1(A)
      • Refutation
        • S(d);
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);N_SPINR(b),P-FLIGHT,XP(G)::R(A)
      • Refutation
        • K(a);N_SPINR(b),S_FLIGHT,XS(H)
    • Try
      • P(J);
      • Threat
        • R1(A)
      • Vars
        • P(c);P_PINS(H),SBLOCK,XP(G)::QAR(B)
        • P(e);OGATEB,P_SPINP(e),SBLOCK,XS(H)::QAR(J)
      • Refutation
        • P(e);
  • Actual
    • S(F);
    • Threat
      • QAB(B)
    • Vars
      • K(a);N_SPINR(b),S_FLIGHT,XS(H)::P=Q
      • P(c);OGATE,XP(G)::QAR1(B),XP(c)
      • P(e);SBLOCK,XS(H)::QAR(B)
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Developed and maintained by Brian Stephenson.
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