MESON Chess Problem Database

Problem Display
PID: 1101 (2b2b2/3pp1p1/p2N2P1/k1B5/P3K2Q/1Pp1PB2/1nr5/8 w - - 0 1)

Clark, DW

The Westminster Papers, 1873

2b2b2/3pp1p1/p2N2P1/k1B5/P3K2Q/1Pp1PB2/1nr5/8

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Bb7+
      • 2.Sxb7#
    • 1...Sd1
      • 2.Sc4#
    • 1...Sd3
      • 2.Sc4#
    • 1...Sxa4
      • 2.b4#
    • 1...Sc4
      • 2.Sxc4#
    • 1...exd6
      • 2.Qd8#
    • 1...e5
      • 2.Qd8#
    • 1...e6
      • 2.Qd8#
  • Tries
    • 1.Kf5?
      • threat
        • 2.Qb4#
      • 1...Sd3
        • 2.Sc4#
      • 1...Sc4
        • 2.Sxc4#
      • 1...e6+!
    • 1.Qxe7?
      • threat
        • 2.Qd8#
      • 1...Bb7+
        • 2.Sxb7#
      • 1...Sxa4
        • 2.b4#
      • 1...Sc4
        • 2.Sxc4#
      • 1...Bxe7!
  • Keys
    • 1.Bd1!
      • 1...Bb7+
        • 2.Sxb7#
      • 1...Sxd1
        • 2.Sc4#
      • 1...Sxa4
        • 2.b4#
      • 1...exd6
        • 2.Qd8#
      • 1...Rc1
        • 2.b4#
      • 1...Rd2
        • 2.b4#
      • 1...Re2
        • 2.b4#
      • 1...Rf2
        • 2.b4#
      • 1...Rg2
        • 2.b4#
      • 1...Rh2
        • 2.b4#
      • 1...Sd3
        • 2.Sc4#
      • 1...Sc4
        • 2.Sxc4#
      • 1...e5
        • 2.Qd8#
      • 1...e6
        • 2.Qd8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • B(i);CHECK,N_GUARD::S(H),XB(i)
    • S(a);N_GUARD::S(H)
    • S(a);SBLOCK,XP(D)::P(A)
    • S(a);N_GUARD::S(H),XS(a)
    • P(g);OGATE,XS(H)::QAB(F)
    • P(g);OGATE::QAB(F)
  • Tries
    • Try
      • K(E);S_FLIGHT
      • Threat
        • QAB1(F)
      • Vars
        • S(a);N_GUARD::S(H)
        • S(a);N_GUARD::S(H),XS(a)
      • Refutation
        • P(g);CHECK
    • Try
      • Q(F);XP(g)
      • Threat
        • QAB(F)
      • Vars
        • B(i);CHECK,N_GUARD::S(H),XB(i)
        • S(a);SBLOCK,XP(D)::P(A)
        • S(a);N_GUARD::S(H),XS(a)
      • Refutation
        • B(j);XQ(F)
  • Actual
    • B(C);
    • Vars
      • B(i);CHECK,N_GUARD::S(H),XB(i)
      • S(a);N_GUARD,XB(C)::S(H)
      • S(a);SBLOCK,XP(D)::P(A)
      • P(g);OGATE,XS(H)::QAB(F)
      • R(b);::P(A)
      • R(b);P_PINP(B)::P(A)
      • S(a);N_GUARD::S(H)
      • S(a);N_GUARD::S(H),XS(a)
      • P(g);OGATE::QAB(F)
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