MESON Chess Problem Database

Problem Display
PID: 81680 (4B3/1K6/2RBk3/1Q1pP3/1P2r1P1/8/1n6/6b1 w - - 0 1)

Macleod, Norman Alasdair

The Problemist, 1988

4B3/1K6/2RBk3/1Q1pP3/1P2r1P1/8/1n6/6b1

#2

8 + 5

6455 The Chessboard Adventures of Norman Macleod 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe5
      • 2.Bc5#
      • 2.Bf8#
    • 1...d4
      • 2.Bf8#
  • Tries
    • 1.Bf7+?
      • 1...Kd7
        • 2.Rc8#
      • 1...Kxf7!
    • 1.Ra6?
      • threat
        • 2.Qd7#
      • 1...Rxe5
        • 2.Bc5#
      • 1...d4
        • 2.Bf8#
      • 1...Rxb4!
    • 1.Rc7?
      • threat
        • 2.Bf7#
        • 2.Re7#
        • 2.Qd7#
      • 1...Rxb4
        • 2.Bf7#
        • 2.Re7#
      • 1...Rxg4
        • 2.Qd7#
      • 1...Rf4
        • 2.Re7#
        • 2.Qd7#
      • 1...d4
        • 2.Bf7#
        • 2.Re7#
      • 1...Rxe5!
  • Keys
    • 1.Rb6!
      • threat
        • 2.Qd7#
      • 1...Rxe5
        • 2.Bc5#
      • 1...d4
        • 2.Bf8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(d);::R(E)+B(F)
  • Tries
    • Try
      • B(H);CHECK
      • Vars
        • K(e);S_FLIGHT::QAB(C)+R(E)
      • Refutation
        • K(e);S_FLIGHT,XB(H)
    • Try
      • R(E);
      • Threat
        • QAB1(C)
      • Vars
        • R(c);SBLOCK,XP(D)::R(E)+B(F)
        • P(d);S_CUTB(a)::R(E)+B(F)
      • Refutation
        • R(c);P_PINQ(C),XP(A)
    • Try
      • R(E);
      • Threat
        • DUALS(3)
      • Vars
        • R(c);XP(B)::QAB1(C)
      • Refutation
        • R(c);XP(D)
  • Actual
    • R(E);
    • Threat
      • QAB1(C)
    • Vars
      • R(c);SBLOCK,XP(D)::R(E)+B(F)
      • P(d);S_CUTB(a)::R(E)+B(F)
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