MESON Chess Problem Database

Problem Display
PID: 19023 (5RB1/p1K4p/r1P3p1/N3k1p1/1R2PN1r/2P4P/p2n1n2/Q5Bb w - - 0 1)

Chandler, Guy Wills

4th HM., Pittsburgh Gazette-Times, 1911

5RB1/p1K4p/r1P3p1/N3k1p1/1R2PN1r/2P4P/p2n1n2/Q5Bb

#2

12 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc6+
      • 2.Sxc6#
    • 1...Bxe4
      • 2.c4#
    • 1...Sdxe4
      • 2.Sc4#
    • 1...Sd1
      • 2.Sd3#
    • 1...Sd3
      • 2.Sxd3#
    • 1...Sxh3
      • 2.Sd3#
    • 1...Sfxe4
      • 2.Sd3#
      • 2.Bd4#
    • 1...Sg4
      • 2.Sd3#
    • 1...h5
      • 2.Sxg6#
    • 1...h6
      • 2.Sxg6#
  • Tries
    • 1.Sd5?
      • threat
        • 2.Re8#
      • 1...Rxc6+
        • 2.Sxc6#
      • 1...Bxe4
        • 2.c4#
      • 1...Sdxe4
        • 2.Sc4#
      • 1...Sfxe4
        • 2.Bd4#
      • 1...Rxe4!
    • 1.Sc4+?
      • 1...Kxe4
        • 2.Bd5#
      • 1...Sxc4!
    • 1.Bd5?
      • threat
        • 2.c4#
      • 1...Rxc6+
        • 2.Sxc6#
      • 1...Sdxe4
        • 2.Sc4#
      • 1...Sfxe4
        • 2.Bd4#
      • 1...Sb1
        • 2.Sc4#
      • 1...Sb3
        • 2.Sc4#
      • 1...Sf3
        • 2.Sc4#
      • 1...Sc4
        • 2.Sxc4#
      • 1...Sd1
        • 2.Sd3#
        • 2.Bd4#
      • 1...Sd3
        • 2.Sxd3#
        • 2.Bd4#
      • 1...Rxh3!
    • 1.Re8+?
      • 1...Kf6
        • 2.c4#
      • 1...Kxf4!
  • Keys
    • 1.Sh5!
      • threat
        • 2.Re8#
      • 1...Rxc6+
        • 2.Sxc6#
      • 1...Rxe4
        • 2.Rb5#
      • 1...Rxh5
        • 2.Bh2#
      • 1...Bxe4
        • 2.c4#
      • 1...Sdxe4
        • 2.Sc4#
      • 1...Sfxe4
        • 2.Bd4#
      • 1...gxh5
        • 2.Rf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • R(h);CHECK,XP(I)::S(H),XR(h)
    • B(a);SBLOCK,XP(F)::QAB(A)+P(C)
    • S(c);N_GUARD,SBLOCK,XP(F)::S(H)
    • S(d);N_GUARD::S(G)
    • S(d);N_GUARD::S(G),XS(d)
    • S(d);N_GUARD,XP(D)::S(G)
    • P(k);N_GUARD::S(G),XP(i)
  • Tries
    • Try
      • S(G);
      • Threat
        • R(K)
      • Vars
        • R(h);CHECK,XP(I)::S(H),XR(h)
        • B(a);SBLOCK,XP(F)::QAB(A)+P(C)
        • S(c);N_GUARD,SBLOCK,XP(F)::S(H)
        • S(d);OGATE,SBLOCK,XP(F)::B(B)
      • Refutation
        • R(e);XP(F)
    • Try
      • S(H);CHECK
      • Vars
        • K(f);P-FLIGHT,XP(F)::B(L)
      • Refutation
        • S(c);XS(H)
    • Try
      • B(L);
      • Threat
        • QAB(A)+P(C)
      • Vars
        • R(h);CHECK,XP(I)::S(H),XR(h)
        • S(c);N_GUARD,XP(F)::S(H)
        • S(d);OGATE,XP(F)::B(B)
        • S(c);N_GUARD::S(H)
        • S(c);N_GUARD::S(H),XS(c)
      • Refutation
        • R(e);XP(D)
    • Try
      • R(K);CHECK
      • Vars
        • K(f);S_FLIGHT::QAB(A)+P(C)
      • Refutation
        • K(f);S_FLIGHT,XS(G)
  • Actual
    • S(G);
    • Threat
      • R(K)
    • Vars
      • R(h);CHECK,XP(I)::S(H),XR(h)
      • R(e);SBLOCK,XP(F)::R(E)
      • R(e);N_GUARD,XS(G)::B(B)
      • B(a);SBLOCK,XP(F)::QAB(A)+P(C)
      • S(c);N_GUARD,SBLOCK,XP(F)::S(H)
      • S(d);OGATE,SBLOCK,XP(F)::B(B)
      • P(i);N_GUARD,XS(G)::R1(K)
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