MESON Chess Problem Database

Problem Display
PID: 172523 (8/8/8/8/4Q2p/B5k1/8/5b1K w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 2002

8/8/8/8/4Q2p/B5k1/8/5b1K

#2

3 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kh3
      • 2.Qf3#
  • Tries
    • 1.Bd6+?
      • 1...Kh3
        • 2.Qf3#
        • 2.Qf5#
        • 2.Qe6#
      • 1...Kf2!
    • 1.Qf4+?
      • 1...Kh3
        • 2.Qf3#
      • 1...Kxf4!
  • Keys
    • 1.Bc1!
      • 1...Bg2+
        • 2.Qxg2#
      • 1...Kf2
        • 2.Qe3#
      • 1...Kh3
        • 2.Qf3#
      • 1...Be2
        • 2.Qg2#
      • 1...Bd3
        • 2.Qg2#
      • 1...Bh3
        • 2.Qf4#
      • 1...Bc4
        • 2.Qg2#
      • 1...Bb5
        • 2.Qg2#
      • 1...Ba6
        • 2.Qg2#
      • 1...h3
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::QAR2(C)
  • Tries
    • Try
      • B(B);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR2(C)
      • Refutation
        • K(b);S_FLIGHT,XQ(C)
  • Actual
    • B(B);
    • Vars
      • B(a);CHECK,N_GUARD::QAR1(C),XB(a)
      • K(b);S_FLIGHT::QAB1(C)
      • K(b);P-FLIGHT::QAR2(C)
      • B(a);N_GUARD::QAR1(C)
      • B(a);SBLOCK::QAB1(C)
      • P(c);SBLOCK::QAB1(C)
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