MESON Chess Problem Database

Problem Display
PID: 66454 (5R2/4nnr1/8/3Pkbp1/3NNR1r/Q6p/1B6/5K2 w - - 0 1)

Anonymous

The Chess Monthly (Hoffer), 1882

5R2/4nnr1/8/3Pkbp1/3NNR1r/Q6p/1B6/5K2

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd5
      • 2.Qc5#
    • 1...Sd6
      • 2.Qxd6#
    • 1...Sh6
      • 2.Qd6#
    • 1...Sd8
      • 2.Qd6#
    • 1...Sh8
      • 2.Qd6#
  • Tries
    • 1.Rxf5+?
      • 1...Kxe4
        • 2.Qf3#
      • 1...Sxf5!
  • Keys
    • 1.Sf6!
      • threat
        • 2.Se2#
        • 2.Se6#
      • 1...Rxf4+
        • 2.Sf3#
      • 1...Bd3+
        • 2.Se2#
      • 1...Kxf4
        • 2.Se2#
      • 1...Kxf6
        • 2.Qd6#
      • 1...Sxd5
        • 2.Rxf5#
      • 1...Be6
        • 2.Se2#
        • 2.Sxe6#
      • 1...Sc6
        • 2.Rxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 5
  • Sets
    • K(c);OGATEB,P-FLIGHT,XP(G)::QAR1(C)
    • S(g);N_GUARD::QAB1(C),XS(g)
    • S(g);N_GUARD::QAB1(C)
  • Tries
    • Try
      • R(F);CHECK,XB(d)
      • Vars
        • K(c);P-FLIGHT,XS(E)::QAB1(C)
      • Refutation
        • S(f);XR(F)
  • Actual
    • S(E);
    • Threat
      • DUALS(2)
    • Vars
      • R(b);CHECK,SBLOCK,XR(F)::B(B)+S(D),DCHECK
      • B(d);CHECK::B(B)+S(D)
      • K(c);S_FLIGHT,XR(F)::S(D)
      • K(c);P_SPINB(d),P_SPINS(g),S_FLIGHT,XS(E)::QAR2(C)
      • S(f);N_GUARD,XP(G)::R1(F),XB(d)
      • S(f);N_GUARD::R1(F),XB(d)
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