MESON Chess Problem Database

Problem Display
PID: 132869 (8/8/8/8/1Q6/4K3/b1PR4/2k5 w - - 0 1)

Andreev, Aleksandr Grigorevich

200 Shakhmatni Zadachi, 1983

8/8/8/8/1Q6/4K3/b1PR4/2k5

#2

4 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Qa3#
  • Tries
    • 1.Rd1+?
      • 1...Kxd1
        • 2.Qd2#
      • 1...Kxc2!
    • 1.Qb3?
      • 1...Bb1
        • 2.Qa3#
      • 1...Bxb3!
  • Keys
    • 1.Qc3!
      • 1...Kb1
        • 2.Rd1#
      • 1...Bb1
        • 2.Qa3#
      • 1...Bb3
        • 2.Qa1#
      • 1...Bc4
        • 2.Qa1#
      • 1...Bd5
        • 2.Qa1#
      • 1...Be6
        • 2.Qa1#
      • 1...Bf7
        • 2.Qa1#
      • 1...Bg8
        • 2.Qa1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • B(b);SBLOCK::QAB(D)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • K(a);P-FLIGHT,XR(B)::QAR1(D)
      • Refutation
        • K(a);P-FLIGHT,XP(A)
    • Try
      • Q(D);
      • Vars
        • B(b);SBLOCK::QAB(D)
      • Refutation
        • B(b);XQ(D)
  • Actual
    • Q(D);
    • Vars
      • K(a);P-FLIGHT::R(B)
      • B(b);SBLOCK::QAB(D)
      • B(b);N_GUARD::QAR2(D)
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