MESON Chess Problem Database

Problem Display
PID: 12131 (8/8/2p5/Q7/3kp3/1K6/8/4BB2 w - - 0 1)

Petrusenko, Alexey Matveevich

3rd Prize, Lokker MT, 1975

8/8/2p5/Q7/3kp3/1K6/8/4BB2

#2

4 + 3

3296 Shakhmatny zadachi miniaturi 1987
2786 More Fun with Chess Miniatures 2000
3242 BCPS Rapid Solving (Cheltenham) 2001

SOLUTION

  • SOUND
  • Tries
    • 1.Bg2?
      • 1...Kd3
        • 2.Qd2#
      • 1...Ke3
        • 2.Qd2#
      • 1...e3
        • 2.Qc3#
      • 1...c5!
    • 1.Qf5?
      • 1...Ke3
        • 2.Qf2#
      • 1...e3
        • 2.Bc3#
      • 1...c5!
  • Keys
    • 1.Bg3!
      • 1...Ke3
        • 2.Qc3#
      • 1...c5
        • 2.Qd2#
      • 1...e3
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(B);
      • Vars
        • K(a);P-FLIGHT::QAR1(D)
        • K(a);S_FLIGHT::QAB1(D)
        • P(b);::QAB1(D)
      • Refutation
        • P(c);
    • Try
      • Q(D);
      • Vars
        • K(a);S_FLIGHT::QAB1(D)
        • P(b);SBLOCK::B(A)
      • Refutation
        • P(c);
  • Actual
    • B(A);
    • Vars
      • K(a);S_FLIGHT::QAR2(D)
      • P(c);SBLOCK::QAR2(D)
      • P(b);::QAB1(D)
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