MESON Chess Problem Database

Problem Display
PID: 172207 (R2B1kr1/3K3b/8/8/6Q1/8/8/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 1996

R2B1kr1/3K3b/8/8/6Q1/8/8/8

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qf3+?
      • 1...Kg7
        • 2.Qf6#
      • 1...Bf5+!
    • 1.Qf5+?
      • 1...Kg7
        • 2.Qf6#
      • 1...Bxf5+!
    • 1.Qf4+?
      • 1...Kg7
        • 2.Qf6#
      • 1...Bf5+!
  • Keys
    • 1.Qe6!
      • threat
        • 2.Bf6#
        • 2.Qf6#
        • 2.Qe7#
      • 1...Rg7+
        • 2.Be7#
      • 1...Kg7
        • 2.Qf6#
      • 1...Rg1
        • 2.Bf6#
      • 1...Rg2
        • 2.Bf6#
      • 1...Rg3
        • 2.Bf6#
      • 1...Rg4
        • 2.Bf6#
      • 1...Rg5
        • 2.Bf6#
      • 1...Rg6
        • 2.Bf6#
      • 1...Rh8
        • 2.Bf6#
      • 1...Be4
        • 2.Qf6#
        • 2.Qe7#
      • 1...Bf5
        • 2.Bf6#
      • 1...Bg6
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
      • Refutation
        • B(a);CHECK,P_SPINB(a)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
      • Refutation
        • B(a);CHECK,XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
      • Refutation
        • B(a);CHECK,P_SPINB(a)
  • Actual
    • Q(A);
    • Threat
      • DUALS(3)
    • Vars
      • R(c);CHECK,SBLOCK::R(C)+B(D),DCHECK
      • K(b);S_FLIGHT::QAB1(A)
      • R(c);::R(C)+B(D)
      • B(a);P_PINQ(A)::R(C)+B(D)
      • B(a);::QAB1(A)
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Developed and maintained by Brian Stephenson.
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