MESON Chess Problem Database

Problem Display
PID: 239131 (8/8/8/5K1p/8/4Q1Pk/5R1b/8 w - - 0 1)

Dyachuk, Vasyl Vasilovich

Sachove umeni (Ceskoslovensky sach), 1996

8/8/8/5K1p/8/4Q1Pk/5R1b/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Kg5?
      • 1...Bxg3
        • 2.Qe6#
      • 1...Bg1
        • 2.g4#
      • 1...h4!
    • 1.Qf4?
      • threat
        • 2.Qh4#
      • 1...h4
        • 2.Qg4#
        • 2.Qxh4#
      • 1...Bxg3!
    • 1.Qg5?
      • threat
        • 2.Qh4#
      • 1...h4
        • 2.Qxh4#
        • 2.Qg4#
      • 1...Bxg3!
    • 1.Qe6?
      • threat
        • 2.Kf4#
      • 1...Bxg3
        • 2.Kg5#
      • 1...Kxg3!
    • 1.g4+?
      • 1...Kh4
        • 2.Rxh2#
      • 1...Bg3!
  • Keys
    • 1.Kf4!
      • threat
        • 2.Qe6#
      • 1...Bxg3+
        • 2.Qxg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • B(a);P_SPINB(a),SBLOCK,XP(C)::QAB(B)
        • B(a);N_GUARD::QAR(B)+P(C)
      • Refutation
        • P(c);
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Refutation
        • B(a);XP(C)
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Refutation
        • B(a);XP(C)
    • Try
      • Q(B);
      • Threat
        • QAB(B)+K(D)
      • Vars
        • B(a);SBLOCK,XP(C)::QAB(B)+K(D)
      • Refutation
        • K(b);P-FLIGHT,XP(C)
    • Try
      • P(C);CHECK
      • Vars
        • K(b);P-FLIGHT::R(A),XB(a)
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • K(D);P-FLIGHT,P_SPINP(C)
    • Threat
      • QAB(B)
    • Vars
      • B(a);CHECK,OGATE,P_SPINB(a),XP(C)::QAR1(B),XB(a)
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