MESON Chess Problem Database

Problem Display
PID: 44390 (4B3/8/3p4/P2p1P2/2pkb1R1/P1Rp2N1/3N3B/2K2Q2 w - - 0 1)

Gilberg, Charles Alexander

Source?, 0000

4B3/8/3p4/P2p1P2/2pkb1R1/P1Rp2N1/3N3B/2K2Q2

#2

11 + 6

176 Crumbs from the Chess-board 1890

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Bg1#
      • 2.Qg1#
    • 1...Kc5
      • 2.Sb3#
  • Tries
    • 1.Sh1?
      • 1...Ke3
        • 2.Bg1#
        • 2.Qf2#
      • 1...Kc5
        • 2.Sb3#
      • 1...Kxc3!
    • 1.Se2+?
      • 1...Ke3
        • 2.Bg1#
        • 2.Bf4#
      • 1...Kc5
        • 2.Sb3#
      • 1...dxe2!
    • 1.Sgxe4?
      • threat
        • 2.Qg1#
        • 2.Qf2#
      • 1...Ke3
        • 2.Bg1#
        • 2.Qf2#
      • 1...dxe4!
    • 1.Sh5?
      • 1...Ke3
        • 2.Bg1#
      • 1...Kc5
        • 2.Sb3#
      • 1...Kxc3!
    • 1.Rxc4+?
      • 1...Ke3
        • 2.Bg1#
        • 2.Qe1#
        • 2.Qg1#
        • 2.Qf4#
      • 1...Ke5
        • 2.Sgxe4#
        • 2.Sh5#
      • 1...dxc4!
    • 1.Qf2+?
      • 1...Ke5
        • 2.Sgxe4#
        • 2.Sh5#
      • 1...Kxc3!
    • 1.Qf3?
      • 1...Kxc3
        • 2.Se2#
      • 1...Kc5
        • 2.Sb3#
      • 1...Ke5!
    • 1.Qf4?
      • 1...Kc5
        • 2.Sb3#
      • 1...Kxc3!
  • Keys
    • 1.Qh3!
      • 1...Kxc3
        • 2.Se2#
      • 1...Ke3
        • 2.Bg1#
      • 1...Kc5
        • 2.Sb3#
      • 1...Ke5
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(c);N_SPINB(d),P_SPINP(b),S_FLIGHT::S(C)
  • Tries
    • Try
      • S(G);
      • Vars
        • K(c);N_SPINB(d),P_SPINP(b),S_FLIGHT::S(C)
      • Refutation
        • K(c);N_SPINB(d),S_FLIGHT,XR(F)
    • Try
      • S(G);CHECK
      • Vars
        • K(c);N_SPINB(d),P_SPINP(b),S_FLIGHT::S(C)
      • Refutation
        • P(a);XS(G)
    • Try
      • S(G);XB(d)
      • Threat
        • DUALS(2)
      • Refutation
        • P(e);P_SPINP(e),XS(G)
    • Try
      • S(G);
      • Vars
        • K(c);N_SPINB(d),P_SPINP(a),S_FLIGHT::B(D)
        • K(c);N_SPINB(d),P_SPINP(b),S_FLIGHT::S(C)
      • Refutation
        • K(c);N_SPINB(d),S_FLIGHT,XR(F)
    • Try
      • R(F);CHECK,XP(b)
      • Refutation
        • P(e);XR(F)
    • Try
      • Q(B);CHECK
      • Refutation
        • K(c);N_SPINB(d),S_FLIGHT,XR(F)
    • Try
      • Q(B);
      • Vars
        • K(c);N_SPINB(d),P_SPINP(a),S_FLIGHT,XR(F)::S(G)
        • K(c);N_SPINB(d),P_SPINP(b),S_FLIGHT::S(C)
      • Refutation
        • K(c);N_SPINB(d),S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(c);N_SPINB(d),P_SPINP(b),S_FLIGHT::S(C)
      • Refutation
        • K(c);N_SPINB(d),S_FLIGHT,XR(F)
  • Actual
    • Q(B);
    • Vars
      • K(c);N_SPINB(d),S_FLIGHT,XR(F)::S(G)
      • K(c);N_SPINB(d),P_SPINP(a),S_FLIGHT::B(D)
      • K(c);N_SPINB(d),P_SPINP(b),S_FLIGHT::S(C)
      • K(c);N_SPINB(d),S_FLIGHT::QAB(B)
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