MESON Chess Problem Database

Problem Display
PID: 135619 (bQ3K2/8/1pk5/8/1R6/4B3/8/8 w - - 0 1)

Lincoln, Robert A

StrateGems, 2010

bQ3K2/8/1pk5/8/1R6/4B3/8/8

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Ke7?
      • 1...Kd5
        • 2.Qd6#
      • 1...Bb7
        • 2.Qd6#
      • 1...b5!
    • 1.Rxb6+?
      • 1...Kd7
        • 2.Rd6#
      • 1...Kd5!
  • Keys
    • 1.Bf4!
      • 1...Kc5
        • 2.Qd6#
      • 1...Kd5
        • 2.Qd6#
      • 1...Kd7
        • 2.Qe8#
      • 1...Bb7
        • 2.Qd6#
      • 1...b5
        • 2.Qxb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Vars
        • K(b);S_FLIGHT::QAR1(C)
        • B(c);SBLOCK::QAR1(C)
      • Refutation
        • P(a);
    • Try
      • R(B);CHECK,XP(a)
      • Vars
        • K(b);OGATE,S_FLIGHT::R1(B)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • B(A);
    • Vars
      • K(b);P-FLIGHT::QAB1(C)
      • K(b);S_FLIGHT::QAR1(C)
      • K(b);S_FLIGHT::QAB1(C)
      • B(c);SBLOCK::QAR1(C)
      • P(a);OGATE::QAB1(C),XP(a)
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