MESON Chess Problem Database

Problem Display
PID: 134393 (N3K1Q1/k2p3R/P5r1/PP6/8/8/5RB1/6B1 w - - 0 1)

Morse, Christopher Jeremy

Problem Observer, 2009

N3K1Q1/k2p3R/P5r1/PP6/8/8/5RB1/6B1

#2

10 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Rc2+?
      • 1...Kb8
        • 2.a7#
      • 1...Rb6!
    • 1.Rf8+?
      • 1...Kb8
        • 2.Kxd7#
        • 2.Ke7#
        • 2.Kf7#
      • 1...Rb6!
  • Keys
    • 1.Kxd7!
      • threat
        • 2.Rf6#
      • 1...Rd6+
        • 2.Kxd6#
      • 1...Rg7+
        • 2.Rf7#
      • 1...Rxg2
        • 2.Rxg2#
      • 1...Rxa6
        • 2.Kc8#
      • 1...Rxg8
        • 2.Rf8#
      • 1...Rg3
        • 2.Rf3#
      • 1...Rg4
        • 2.Rf4#
      • 1...Rg5
        • 2.Rf5#
      • 1...Rb6
        • 2.axb6#
      • 1...Rc6
        • 2.Kxc6#
      • 1...Re6
        • 2.Kxe6#
      • 1...Rf6
        • 2.Rxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • K(b);N_SPINP(c),OGATE,S_FLIGHT::P(F)
      • Refutation
        • R(a);P_SPINR(a)
    • Try
      • R(B);CHECK
      • Refutation
        • R(a);P_SPINR(a)
  • Actual
    • K(I);S_FLIGHT,XP(c)
    • Threat
      • B(A)+R(B)
    • Vars
      • R(a);CHECK::R(G)+K(I),XR(a)
      • R(a);CHECK,N_GUARD::B(A)+R(B)
      • R(a);OGATE,XB(C)::B(A)+R(B),XR(a)
      • R(a);N_GUARD,XP(F)::R(G)+K(I)
      • R(a);N_GUARD,XQ(J)::B(A)+R(B)
      • R(a);N_GUARD::B(A)+R(B)
      • R(a);OGATE::P(D),XR(a)
      • R(a);::R(G)+K(I),XR(a)
      • R(a);::B(A)+R(B),XR(a)
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