MESON Chess Problem Database

Problem Display
PID: 67727 (2N1B3/8/3pk3/4P2p/1p2Q2P/1K6/2PP4/8 w - - 0 1)

Valuska, Jan

2nd Prize, Ancin MT, 1978

2N1B3/8/3pk3/4P2p/1p2Q2P/1K6/2PP4/8

#2

8 + 4

5865 Czech Album (1976-1978) 1983

SOLUTION

  • SOUND
  • Tries
    • 1.Bg6?
      • 1...dxe5
        • 2.Qc6#
      • 1...d5
        • 2.Qf5#
      • 1...Kd7!
    • 1.Qf3?
      • 1...dxe5
        • 2.Qf7#
      • 1...d5
        • 2.Qf6#
      • 1...Kxe5!
    • 1.Qf4?
      • 1...dxe5
        • 2.Qf7#
      • 1...d5
        • 2.Qf6#
      • 1...Kd5!
    • 1.c4?
      • 1...dxe5
        • 2.Qg6#
      • 1...d5
        • 2.cxd5#
      • 1...bxc4 ep!
  • Keys
    • 1.d4!
      • threat
        • 2.d5#
      • 1...dxe5
        • 2.Qxe5#
      • 1...d5
        • 2.Qg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(H);
      • Vars
        • P(c);OGATEB,P_SPINP(c),SBLOCK,XP(F)::QAR2(D)
        • P(c);SBLOCK::QAB1(D)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • P(c);SBLOCK,XP(F)::QAB1(D)
        • P(c);SBLOCK::QAR1(D)
      • Refutation
        • K(d);P-FLIGHT,XP(F)
    • Try
      • Q(D);
      • Vars
        • P(c);SBLOCK,XP(F)::QAB1(D)
        • P(c);SBLOCK::QAR1(D)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • P(A);
      • Vars
        • P(c);P_SPINP(c),SBLOCK,XP(F)::QAR2(D)
        • P(c);OGATE::P(A),XP(c)
      • Refutation
        • P(a);EP,XP(A)
  • Actual
    • P(B);
    • Threat
      • P(B)
    • Vars
      • P(c);OGATE,P_SPINP(c),XP(F)::QAR1(D),XP(c)
      • P(c);SBLOCK::QAR2(D)
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