MESON Chess Problem Database

Problem Display
PID: 3213 (6K1/8/8/5P2/8/1Q6/1P1N4/kb6 w - - 0 1)

Gulyaev, Aleksandr Pavlovich (aka Grin, AP)

2nd Prize, Shakhmaty (Baku), 1985-1986

6K1/8/8/5P2/8/1Q6/1P1N4/kb6

#2

5 + 2

3296 Shakhmatny zadachi miniaturi 1987
2786 More Fun with Chess Miniatures 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Bc2
      • 2.Qa3#
    • 1...Bd3
      • 2.Qa3#
    • 1...Be4
      • 2.Qa3#
    • 1...Bxf5
      • 2.Qa3#
  • Tries
    • 1.Kf7?
      • 1...Bxf5
        • 2.Qa3#
      • 1...Bc2
        • 2.Qa3#
      • 1...Bd3
        • 2.Qa3#
      • 1...Be4
        • 2.Qa3#
      • 1...Ba2!
    • 1.Kg7?
      • 1...Bxf5
        • 2.Qa3#
      • 1...Bc2
        • 2.Qa3#
      • 1...Bd3
        • 2.Qa3#
      • 1...Be4
        • 2.Qa3#
      • 1...Ba2!
    • 1.Kf8?
      • 1...Bxf5
        • 2.Qa3#
      • 1...Bc2
        • 2.Qa3#
      • 1...Bd3
        • 2.Qa3#
      • 1...Be4
        • 2.Qa3#
      • 1...Ba2!
    • 1.Kh8?
      • 1...Bxf5
        • 2.Qa3#
      • 1...Bc2
        • 2.Qa3#
      • 1...Bd3
        • 2.Qa3#
      • 1...Be4
        • 2.Qa3#
      • 1...Ba2!
    • 1.Qd1?
      • threat
        • 2.Qxb1#
      • 1...Ka2
        • 2.Qxb1#
      • 1...Kxb2!
    • 1.Qb4?
      • 1...Ka2
        • 2.Qa3#
      • 1...Bxf5
        • 2.Qa3#
      • 1...Bc2
        • 2.Qa3#
      • 1...Bd3
        • 2.Qa3#
      • 1...Be4
        • 2.Qa3#
      • 1...Ba2+!
  • Keys
    • 1.Qc3!
      • 1...Ba2+
        • 2.b3#
      • 1...Ka2
        • 2.Qa3#
      • 1...Bxf5
        • 2.Qa3#
      • 1...Bc2
        • 2.Qa3#
      • 1...Bd3
        • 2.Qa3#
      • 1...Be4
        • 2.Qa3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(b);N_GUARD::QAR2(C)
    • B(b);N_GUARD,XP(D)::QAR2(C)
  • Tries
    • Try
      • K(E);S_FLIGHT
      • Vars
        • B(b);N_GUARD,XP(D)::QAR2(C)
        • B(b);N_GUARD::QAR2(C)
      • Refutation
        • B(b);P_PINQ(C)
    • Try
      • K(E);P-FLIGHT
      • Vars
        • B(b);N_GUARD,XP(D)::QAR2(C)
        • B(b);N_GUARD::QAR2(C)
      • Refutation
        • B(b);
    • Try
      • K(E);P-FLIGHT
      • Vars
        • B(b);N_GUARD,XP(D)::QAR2(C)
        • B(b);N_GUARD::QAR2(C)
      • Refutation
        • B(b);
    • Try
      • K(E);P-FLIGHT
      • Vars
        • B(b);N_GUARD,XP(D)::QAR2(C)
        • B(b);N_GUARD::QAR2(C)
      • Refutation
        • B(b);
    • Try
      • Q(C);P_PINB(b)
      • Threat
        • QAR1(C),XB(b)
      • Vars
        • K(a);N_SPINB(b),P-FLIGHT::QAB1(C),XB(b)
      • Refutation
        • K(a);N_SPINB(b),S_FLIGHT,XP(A)
    • Try
      • Q(C);
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
        • B(b);N_GUARD,XP(D)::QAR2(C)
        • B(b);N_GUARD::QAR2(C)
      • Refutation
        • B(b);CHECK
  • Actual
    • Q(C);
    • Vars
      • B(b);CHECK,SBLOCK::QAB(C)+P(A)
      • K(a);P-FLIGHT::QAR1(C)
      • B(b);N_GUARD,XP(D)::QAR2(C)
      • B(b);N_GUARD::QAR2(C)
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