MESON Chess Problem Database

Problem Display
PID: 81368 (b2B4/Pk1P4/1P2K3/2R1Pp2/1N2rp2/4pB2/4P3/R7 w - - 0 1)

Guttman, Newman

Macleod, Norman Alasdair

3rd Prize, Bulletin of the Central Chess Club of USSR, 1977

b2B4/Pk1P4/1P2K3/2R1Pp2/1N2rp2/4pB2/4P3/R7

#2

11 + 6

6455 The Chessboard Adventures of Norman Macleod 1996

SOLUTION

  • SOUND
  • Tries
    • 1.Kd5?
      • 1...Rd4+
        • 2.Kxd4#
      • 1...Rxe5+
        • 2.Kxe5#
      • 1...Rc4
        • 2.Kxc4#
      • 1...Rxb4!
    • 1.Rd5?
      • 1...Rxe5+
        • 2.Rxe5#
      • 1...Rxb4
        • 2.Rd4#
      • 1...Rd4
        • 2.Rxd4#
      • 1...Rc4!
  • Keys
    • 1.Sc6!
      • 1...Rxe5+
        • 2.Sxe5#
      • 1...Ra4
        • 2.Sb4#
      • 1...Rb4
        • 2.Sxb4#
        • 2.Sd4#
      • 1...Rc4
        • 2.Sd4#
      • 1...Rd4
        • 2.Sxd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(H);N_PINR(b),N_SPINP(F),S_FLIGHT
      • Vars
        • R(b);CHECK::B(C)+K(H),XR(b)
        • R(b);CHECK,XP(F)::B(C)+K(H),XR(b)
        • R(b);::B(C)+K(H),XR(b)
      • Refutation
        • R(b);XS(D)
    • Try
      • R(E);N_PINR(b)
      • Vars
        • R(b);CHECK,OGATE,XP(F)::B(C)+R(E),XR(b)
        • R(b);N_PINP(F),OGATEB,XS(D)::B(C)+R(E)
        • R(b);N_PINP(F),OGATEB::B(C)+R(E),XR(b)
      • Refutation
        • R(b);N_PINP(F)
  • Actual
    • S(D);N_PINR(b)
    • Vars
      • R(b);CHECK,XP(F)::B(C)+S(D),XR(b)
      • R(b);N_PINP(F)::B(C)+S(D)
      • R(b);N_PINP(F)::B(C)+S(D),XR(b)
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