MESON Chess Problem Database

Problem Display
PID: 12170 (b7/B7/7b/8/2Q3R1/5k2/8/7K w - - 0 1)

Cyrulik, Stepan Pavlovich

Kirillov, Stanislav Vasilovich

Kuznetsov, Mikhail Pavlovich

Shakhmaty v SSSR, 1975

b7/B7/7b/8/2Q3R1/5k2/8/7K

#2

4 + 3

3295 Einfuhrung in die Welt des Schachproblem 1984

SOLUTION

  • SOUND
  • Sets
    • 1...Be4
      • 2.Qxe4#
  • Tries
    • 1.Kh2?
      • threat
        • 2.Rg3#
      • 1...Bf4+
        • 2.Rxf4#
      • 1...Be4
        • 2.Qxe4#
      • 1...Be3!
    • 1.Rg5?
      • threat
        • 2.Qg4#
      • 1...Be4
        • 2.Qf1#
      • 1...Bxg5!
    • 1.Qc2?
      • threat
        • 2.Qd1#
        • 2.Qg2#
      • 1...Bd2
        • 2.Qd1#
      • 1...Be3
        • 2.Qg2#
      • 1...Bf4
        • 2.Qg2#
      • 1...Kxg4+!
  • Keys
    • 1.Rg2!
      • threat
        • 2.Qg4#
      • 1...Be4
        • 2.Qf1#
      • 1...Bf4
        • 2.Qe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(c);N_GUARD::QAB1(B),XB(c)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Threat
        • R1(C)
      • Vars
        • B(b);CHECK,N_GUARD::R1(C),XB(b)
        • B(c);N_GUARD::QAB1(B),XB(c)
      • Refutation
        • B(b);
    • Try
      • R(C);
      • Threat
        • QAB1(B)
      • Vars
        • B(c);SBLOCK::QAR2(B)
      • Refutation
        • B(b);XR(C)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • B(b);::QAB(B)
        • B(b);::QAB1(B)
      • Refutation
        • K(a);CHECK,S_FLIGHT,XR(C)
  • Actual
    • R(C);
    • Threat
      • QAB1(B)
    • Vars
      • B(c);SBLOCK::QAR2(B)
      • B(b);SBLOCK::QAB1(B)
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