MESON Chess Problem Database

Problem Display
PID: 22343 (r7/2Q5/kP6/2b5/K7/1R6/8/8 w - - 0 1)

Lincoln, Robert A

More Fun with Chess Miniatures, 2000

r7/2Q5/kP6/2b5/K7/1R6/8/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Ra7
      • 2.Qxa7#
    • 1...Rb8
      • 2.Qa7#
    • 1...Rc8
      • 2.Qa7#
      • 2.Qxc8#
    • 1...Rd8
      • 2.Qa7#
    • 1...Re8
      • 2.Qa7#
    • 1...Rf8
      • 2.Qa7#
    • 1...Rg8
      • 2.Qa7#
    • 1...Rh8
      • 2.Qa7#
    • 1...Bxb6
      • 2.Rxb6#
      • 2.Qxb6#
  • Tries
    • 1.Rb5?
      • threat
        • 2.Ra5#
      • 1...Bxb6
        • 2.Rxb6#
        • 2.Qxb6#
      • 1...Bb4!
  • Keys
    • 1.b7!
      • threat
        • 2.Qa5#
      • 1...Ka7
        • 2.b8S#
      • 1...Bb4
        • 2.bxa8Q#
        • 2.bxa8R#
      • 1...Bb6
        • 2.Qxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • R(c);N_GUARD::QAR1(D),XR(c)
    • R(c);N_GUARD::QAR1(D)
  • Tries
    • Try
      • R(A);
      • Threat
        • R1(A)
      • Refutation
        • B(a);
  • Actual
    • P(C);
    • Threat
      • QAR1(D)
    • Vars
      • K(b);P-FLIGHT::P=S
      • B(a);N_GUARD::PXR(c)=Q
      • B(a);N_GUARD::QAR1(D),XB(a)
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