MESON Chess Problem Database

Problem Display
PID: 44879 (1Q5b/1B6/1R6/8/2pk4/3p4/5R1B/K7 w - - 0 1)

Kisis, Imants J

6th Prize, Magyar Sakkelet, 1967

1Q5b/1B6/1R6/8/2pk4/3p4/5R1B/K7

#2

6 + 4

3772 FIDE Album (1965-1967) 1976

SOLUTION

  • SOUND
  • Sets
    • 1...Kc3
      • 2.Qxh8#
    • 1...Be5
      • 2.Qxe5#
  • Tries
    • 1.Qa7?
      • threat
        • 2.Rb3#
      • 1...Ke3+
        • 2.Rbf6#
      • 1...Kc5+
        • 2.Rbb2#
      • 1...c3
        • 2.Rb4#
      • 1...Kc3!
  • Keys
    • 1.Bg1!
      • threat
        • 2.Rc2#
      • 1...Ke3+
        • 2.Rfb2#
      • 1...Kc5+
        • 2.Rff6#
      • 1...Kc3
        • 2.Qxh8#
      • 1...d2
        • 2.Rf3#
      • 1...c3
        • 2.Rf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • K(c);S_FLIGHT::QAB(F),XB(d)
    • B(d);N_GUARD::QAB1(F),XB(d)
  • Tries
    • Try
      • Q(F);
      • Threat
        • QAB(F)+R(D)
      • Vars
        • K(c);CHECK,S_FLIGHT::QAB(F)+R(D)
        • P(b);SBLOCK::QAB(F)+R(D),DCHECK
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • B(C);
    • Threat
      • B(C)+R(B)
    • Vars
      • K(c);CHECK,S_FLIGHT::B(C)+R(B)
      • K(c);S_FLIGHT::QAB(F),XB(d)
      • P(a);::B(C)+R(B)
      • P(b);SBLOCK::B(C)+R(B),DCHECK
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