MESON Chess Problem Database

Problem Display
PID: 186171 (B7/3K1p2/2p2P2/Rbpk1pnR/pP6/N1PN1pP1/8/B7 w - - 0 1)

White, James R

Problem Observer, 2017

B7/3K1p2/2p2P2/Rbpk1pnR/pP6/N1PN1pP1/8/B7

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Bc4
      • 2.Bxc6#
    • 1...Ba6
      • 2.Bxc6#
    • 1...Se4
      • 2.Rxf5#
    • 1...cxb4
      • 2.Bxc6#
    • 1...c4
      • 2.Bxc6#
  • Tries
    • 1.c4+?
      • 1...Bxc4
        • 2.Bxc6#
      • 1...Ke4!
  • Keys
    • 1.Sf2!
      • 1...Ke5
        • 2.c4#
      • 1...cxb4
        • 2.Rxb5#
      • 1...Bf1
        • 2.Rxc5#
      • 1...Be2
        • 2.Rxc5#
      • 1...Bd3
        • 2.Rxc5#
      • 1...Bc4
        • 2.Rxc5#
      • 1...Ba6
        • 2.Rxc5#
      • 1...Sh3
        • 2.Rxf5#
      • 1...Se4
        • 2.Rxf5#
      • 1...Se6
        • 2.Rxf5#
      • 1...Sh7
        • 2.Rxf5#
      • 1...c4
        • 2.Rxb5#
      • 1...f4
        • 2.Rxg5#

There are these versions: 186175

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 4
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • B(c);N_GUARD,N_SPINP(h),P_SPINP(d)::B(K),XP(h)
    • S(g);N_SPINP(h),OGATE,P_SPINP(f),SBLOCK::R(H),XP(f)
    • P(d);P_SPINB(c),XP(F)::B(K),XP(h)
    • P(d);P_SPINB(c)::B(K),XP(h)
  • Tries
    • Try
      • P(C);CHECK
      • Vars
        • B(c);N_SPINP(h),P_SPINP(d),XP(C)::B(K),XP(h)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • S(D);
    • Vars
      • K(e);N_SPINP(h),P-FLIGHT::B(A)+P(C)
      • P(d);OGATEB,P_SPINB(c),XP(F)::R(G),XB(c)
      • B(c);N_SPINP(h),OGATE,P_SPINP(d)::R1(G),XP(d)
      • S(g);N_SPINP(h),OGATE,P_SPINP(f)::R(H),XP(f)
      • P(d);OGATEB,P_SPINB(c)::R(G),XB(c)
      • P(f);OGATEB,P_SPINS(g)::R(H),XS(g)
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