MESON Chess Problem Database

Problem Display
PID: 84499 (6Q1/5p2/5p2/RB2Nk2/K2P1nR1/B2p2nq/2N1r3/8 w - - 0 1)

Szwedowski, Leopold Mieczyslaw

SEPA, 1966

6Q1/5p2/5p2/RB2Nk2/K2P1nR1/B2p2nq/2N1r3/8

#2

9 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Bxd3#
    • 1...Ke6
      • 2.Bd7#
    • 1...Sg2
      • 2.Bd7#
      • 2.Qc8#
    • 1...Sd5
      • 2.Bd7#
      • 2.Qc8#
    • 1...Sh5
      • 2.Bd7#
      • 2.Qc8#
    • 1...Sg6
      • 2.Bd7#
      • 2.Qc8#
  • Tries
    • 1.Bd7+?
      • 1...Ke4
        • 2.Qa8#
      • 1...Se6!
    • 1.Rxf4+?
      • 1...Ke6
        • 2.Bc4#
        • 2.Bd7#
        • 2.Qxf7#
      • 1...Kxf4!
    • 1.Qh7+?
      • 1...Ke6
        • 2.Bd7#
      • 1...Sg6
        • 2.Bd7#
      • 1...Qxh7!
    • 1.Qg5+?
      • 1...Ke4
        • 2.Bxd3#
        • 2.Bc6#
      • 1...Ke6
        • 2.Bd7#
      • 1...fxg5!
    • 1.Qg6+?
      • 1...Ke6
        • 2.Bd7#
      • 1...Sxg6
        • 2.Bd7#
      • 1...fxg6!
    • 1.Qc8+?
      • 1...Ke4
        • 2.Bxd3#
        • 2.Bc6#
      • 1...Se6!
  • Keys
    • 1.Sxf7!
      • threat
        • 2.Sd6#
      • 1...Ke4
        • 2.Bc6#
      • 1...Ke6
        • 2.Sh6#
      • 1...Re6
        • 2.Bxd3#
      • 1...Se4
        • 2.Bd7#
      • 1...Sg6
        • 2.Bd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(f);P_SPINS(e),S_FLIGHT::B(G),XP(b)
    • K(f);P_SPINP(h),S_FLIGHT::B(G)
  • Tries
    • Try
      • B(G);CHECK
      • Vars
        • K(f);P_SPINS(e),S_FLIGHT::QAB(I)
      • Refutation
        • S(e);P_SPINS(e)
    • Try
      • R(E);CHECK,XS(e)
      • Refutation
        • K(f);P-FLIGHT,XR(E)
    • Try
      • Q(I);CHECK
      • Vars
        • K(f);S_FLIGHT::B(G)
        • S(e);P_SPINS(e)::B(G)
      • Refutation
        • Q(d);XQ(I)
    • Try
      • Q(I);CHECK
      • Vars
        • K(f);S_FLIGHT::B(G)
      • Refutation
        • P(g);XQ(I)
    • Try
      • Q(I);CHECK
      • Vars
        • K(f);P_SPINP(g),S_FLIGHT::B(G)
        • S(e);XQ(I)::B(G)
      • Refutation
        • P(h);XQ(I)
    • Try
      • Q(I);CHECK
      • Refutation
        • S(e);P_SPINS(e)
  • Actual
    • S(H);XP(h)
    • Threat
      • S(H)
    • Vars
      • K(f);P_SPINS(e),S_FLIGHT::B(G)
      • K(f);S_FLIGHT::QAB(I)+S(H)
      • R(a);SBLOCK::R(F)+B(G),DCHECK,XP(b)
      • S(c);SBLOCK::R(F)+B(G),DCHECK
      • S(e);::R(F)+B(G),DCHECK
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