MESON Chess Problem Database

Problem Display
PID: 68557 (k2N3Q/b2N4/8/8/8/8/2p4K/2n5 w - - 0 1)

Gocher, J

The Chess Player's Chronicle (Staunton), 1861

k2N3Q/b2N4/8/8/8/8/2p4K/2n5

#2

4 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Sb6+?
      • 1...Kb8
        • 2.Qe5#
      • 1...Bxb6!
    • 1.Sc6+?
      • 1...Bb8+
        • 2.Qxb8#
      • 1...Kb7!
    • 1.Se6+?
      • 1...Bb8+
        • 2.Qxb8#
      • 1...Kb7!
    • 1.Sb7+?
      • 1...Bb8+
        • 2.Qxb8#
      • 1...Kxb7!
    • 1.Sf7+?
      • 1...Bb8+
        • 2.Qxb8#
      • 1...Kb7!
    • 1.Qe5?
      • threat
        • 2.Qe4#
        • 2.Qd5#
      • 1...Bf2
        • 2.Qb8#
      • 1...Be3
        • 2.Qb8#
      • 1...Bd4
        • 2.Qb8#
      • 1...Bc5
        • 2.Qb8#
      • 1...Bb6
        • 2.Qb8#
      • 1...Bb8
        • 2.Qxb8#
      • 1...Bg1+!
  • Keys
    • 1.Qa1!
      • 1...Sa2
        • 2.Qh1#
      • 1...Se2
        • 2.Qh1#
      • 1...Sb3
        • 2.Qh1#
      • 1...Sd3
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(d);P-FLIGHT::QAB(D)
      • Refutation
        • B(c);XS(B)
    • Try
      • S(C);CHECK
      • Vars
        • B(c);CHECK,N_GUARD,P_SPINB(c)::QAR1(D),XB(c)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • B(c);CHECK,N_GUARD,P_SPINB(c)::QAR1(D),XB(c)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • B(c);CHECK,N_GUARD,P_SPINB(c)::QAR1(D),XB(c)
      • Refutation
        • K(d);S_FLIGHT,XS(C)
    • Try
      • S(C);CHECK
      • Vars
        • B(c);CHECK,N_GUARD,P_SPINB(c)::QAR1(D),XB(c)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(D);
      • Threat
        • DUALS(2)
      • Vars
        • B(c);N_GUARD::QAR1(D)
        • B(c);N_GUARD,P_PINQ(D)::QAR1(D),XB(c)
      • Refutation
        • B(c);CHECK
  • Actual
    • Q(D);P_PINB(c)
    • Vars
      • S(a);N_SPINB(c),OGATE::QAB(D)
      • S(a);OGATE::QAB(D)
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