MESON Chess Problem Database

Problem Display
PID: 152410 (8/2rp2QK/2PNP3/2Pk1N2/3n4/B7/1b1R4/8 w - - 0 1)

Weiss, Berthold

Good Companions (November), 1915

8/2rp2QK/2PNP3/2Pk1N2/3n4/B7/1b1R4/8

#2

9 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc6
      • 2.Se7#
  • Tries
    • 1.Rxd4+?
      • 1...Kxc6
        • 2.Se7#
        • 2.Qg2#
      • 1...Kxe6
        • 2.Qe7#
      • 1...Bxd4!
    • 1.Qxd4+?
      • 1...Kxc6
        • 2.Se7#
        • 2.Qa4#
        • 2.Qe4#
        • 2.Qd5#
      • 1...Kxe6
        • 2.Re2#
      • 1...Bxd4!
    • 1.Qe5+?
      • 1...Kxc6
        • 2.Se7#
        • 2.Qe4#
      • 1...Kxe5!
  • Keys
    • 1.Qg5!
      • threat
        • 2.Sxd4#
      • 1...dxc6+
        • 2.Sg7#
      • 1...dxe6+
        • 2.Se7#
      • 1...Ke5
        • 2.Sxd4#
      • 1...Kxc6
        • 2.Se7#
      • 1...Kxe6
        • 2.Sg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(c);N_SPINS(b),S_FLIGHT,XP(E)::S(D)
  • Tries
    • Try
      • R(A);CHECK,XS(b)
      • Vars
        • K(c);S_FLIGHT,XP(G)::QAR1(H)
      • Refutation
        • B(a);XR(A)
    • Try
      • Q(H);CHECK,XS(b)
      • Vars
        • K(c);S_FLIGHT,XP(G)::R(A)
      • Refutation
        • B(a);P_SPINB(a),XQ(H)
    • Try
      • Q(H);CHECK
      • Refutation
        • K(c);N_SPINS(b),P-FLIGHT,XQ(H)
  • Actual
    • Q(H);
    • Threat
      • QAR(H)+S(D),XS(b)
    • Vars
      • P(e);CHECK,SBLOCK,XP(E)::QAR(H)+S(D)
      • P(e);CHECK,SBLOCK,XP(G)::QAR(H)+S(D),DCHECK
      • K(c);N_SPINS(b),P-FLIGHT::QAR(H)+S(D),XS(b)
      • K(c);N_SPINS(b),S_FLIGHT,XP(E)::S(D)
      • K(c);N_SPINS(b),S_FLIGHT,XP(G)::S(D)
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