MESON Chess Problem Database

Problem Display
PID: 86696 (BK1R4/1np5/p1Pb4/Qn1k1P2/3NRp2/B2P4/8/8 w - - 0 1)

Gross, Erwin

Die Schwalbe, 1964

BK1R4/1np5/p1Pb4/Qn1k1P2/3NRp2/B2P4/8/8

#2

10 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Se2?
      • 1...Kxc6
        • 2.Bxb7#
      • 1...Sxa5
        • 2.Sxf4#
      • 1...Sxd8
        • 2.Sc3#
      • 1...Sc5
        • 2.Sxf4#
      • 1...f3!
    • 1.Qb4?
      • threat
        • 2.Qb3#
        • 2.Qc4#
      • 1...Sxd4
        • 2.Qc4#
      • 1...Sa5
        • 2.Qc5#
      • 1...Sc5
        • 2.Qxc5#
        • 2.Qc4#
      • 1...Sxa3!
    • 1.Qxb5+?
      • 1...Sc5
        • 2.Qc4#
        • 2.Qxc5#
      • 1...axb5!
  • Keys
    • 1.Sf3!
      • 1...Kxc6
        • 2.Bxb7#
      • 1...Sxa5
        • 2.Re5#
      • 1...Sxd8
        • 2.Rd4#
      • 1...Sc5
        • 2.Re5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Vars
        • K(c);N_SPINB(e),N_SPINS(b),OGATEB,P_SPINS(f),S_FLIGHT,XP(G)::B(H),XS(f)
        • S(f);N_SPINS(b),XQ(E)::S(C),XP(a)
        • S(f);N_SPINB(e),XR(J)::S(C)
        • S(f);N_SPINS(b)::S(C),XP(a)
      • Refutation
        • P(a);
    • Try
      • Q(E);N_PINS(b)
      • Threat
        • DUALS(2)
      • Vars
        • S(b);XS(C)::QAB1(E)
        • S(f);N_GUARD::QAR1(E)
      • Refutation
        • S(b);XB(A)
    • Try
      • Q(E);CHECK,XS(b)
      • Refutation
        • P(d);XQ(E)
  • Actual
    • S(C);
    • Vars
      • K(c);N_SPINB(e),N_SPINS(b),OGATEB,P_SPINS(f),S_FLIGHT,XP(G)::B(H),XS(f)
      • S(f);N_SPINS(b),XQ(E)::R1(D)
      • S(f);N_SPINB(e),XR(J)::R1(D)
      • S(f);N_SPINS(b)::R1(D)
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