MESON Chess Problem Database

Problem Display
PID: 68037 (3R4/2B5/r2qp1pK/3Pk1NR/4p3/2P5/8/1bb2Q1B w - - 0 1)

Pituk, Alexander

3rd Prize, Pedagogusok Lapja, 1976

3R4/2B5/r2qp1pK/3Pk1NR/4p3/2P5/8/1bb2Q1B

#2

9 + 8

5865 Czech Album (1976-1978) 1983

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd5
      • 2.Qb5#
    • 1...Bb2
      • 2.Sf7#
    • 1...Ba3
      • 2.Sf7#
    • 1...Bxg5+
      • 2.Rxg5#
    • 1...e3
      • 2.Sf7#
    • 1...exd5
      • 2.Re8#
  • Tries
    • 1.Kg7?
      • threat
        • 2.Sf7#
      • 1...Kxd5
        • 2.Qb5#
      • 1...Bxg5
        • 2.Rxg5#
      • 1...exd5
        • 2.Re8#
        • 2.Qf6#
      • 1...gxh5!
    • 1.Bxd6+?
      • 1...Kxd5
        • 2.Qb5#
      • 1...Rxd6!
  • Keys
    • 1.Kxg6!
      • threat
        • 2.Sf7#
      • 1...e3+
        • 2.Se4#
      • 1...exd5+
        • 2.Qf6#
      • 1...Kxd5
        • 2.Qb5#
      • 1...Bxg5
        • 2.Rxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • K(d);OGATEB,P-FLIGHT,P_SPINP(c),XP(D)::QAR2(A)
    • B(b);N_PINS(E)::R(F)+S(E),DCHECK
    • B(b);CHECK,OGATE,P_SPINB(b),XS(E)::R(F),XB(b)
    • P(c);N_PINS(E)::R(F)+S(E),DCHECK
    • P(g);OGATEB,SBLOCK,XP(D)::R(I)
  • Tries
    • Try
      • K(G);N_SPINS(E),S_FLIGHT
      • Threat
        • R(F)+S(E),DCHECK
      • Vars
        • K(d);OGATEB,P-FLIGHT,P_SPINP(c),XP(D)::QAR2(A)
        • B(b);OGATE,P_SPINB(b),XS(E)::R(F),XB(b)
      • Refutation
        • P(h);XR(F)
    • Try
      • B(H);CHECK,XQ(f)
      • Vars
        • K(d);P-FLIGHT,P_SPINP(c),XP(D)::QAR2(A)
      • Refutation
        • R(e);XB(H)
  • Actual
    • K(G);N_SPINS(E),P-FLIGHT,XP(h)
    • Threat
      • R(F)+S(E),DCHECK
    • Vars
      • P(c);CHECK,S_CUTB(b)::R(F)+S(E)
      • P(g);CHECK,SBLOCK,XP(D)::QAB1(A)
      • K(d);OGATEB,P-FLIGHT,P_SPINP(c),XP(D)::QAR2(A)
      • B(b);OGATE,P_SPINB(b),XS(E)::R(F),XB(b)
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