MESON Chess Problem Database

Problem Display
PID: 81757 (1Q6/8/2p5/2bkNP2/R2PnP2/p5r1/2R5/1NK2b2 w - - 0 1)

Anonymous

Problem Observer, 2009

1Q6/8/2p5/2bkNP2/R2PnP2/p5r1/2R5/1NK2b2

#2

9 + 7

SOLUTION

  • SOUND
  • Tries
    • 1.Sf3?
      • threat
        • 2.Qe5#
      • 1...Bxd4
        • 2.Rxd4#
      • 1...Sd6
        • 2.Sc3#
      • 1...Bd6!
    • 1.Sg4?
      • threat
        • 2.Qe5#
      • 1...Sd6
        • 2.Sf6#
      • 1...Bd6
        • 2.Qg8#
      • 1...Bxd4!
    • 1.Sg6?
      • threat
        • 2.Qe5#
      • 1...Bxd4
        • 2.Se7#
      • 1...Bd6
        • 2.Qg8#
      • 1...Sd6!
    • 1.Sd7?
      • threat
        • 2.Qe5#
      • 1...Sd6
        • 2.Sf6#
      • 1...Bd6
        • 2.Sb6#
      • 1...Bxd4!
    • 1.Qg8+?
      • 1...Kd6
        • 2.Qd8#
      • 1...Rxg8!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Qe5#
      • 1...Bxd4
        • 2.Sb4#
      • 1...Sd6
        • 2.Sc3#
      • 1...Bd6
        • 2.Qb3#

This is a version of 18059

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);
      • Threat
        • QAR1(I)
      • Vars
        • B(e);OGATE,XP(E)::R1(D),XB(e)
        • S(d);N_GUARD::S(A)
      • Refutation
        • B(e);
    • Try
      • S(G);
      • Threat
        • QAR1(I)
      • Vars
        • S(d);N_GUARD::S(G)
        • B(e);SBLOCK::QAB(I)
      • Refutation
        • B(e);XP(E)
    • Try
      • S(G);
      • Threat
        • QAR1(I)
      • Vars
        • B(e);N_GUARD,XP(E)::S(G)
        • B(e);SBLOCK::QAB(I)
      • Refutation
        • S(d);
    • Try
      • S(G);
      • Threat
        • QAR1(I)
      • Vars
        • S(d);N_GUARD::S(G)
        • B(e);N_GUARD::S(G)
      • Refutation
        • B(e);XP(E)
    • Try
      • Q(I);CHECK
      • Vars
        • K(f);P-FLIGHT::QAR2(I)
      • Refutation
        • R(c);XQ(I)
  • Actual
    • S(G);
    • Threat
      • QAR1(I)
    • Vars
      • B(e);N_GUARD,SBLOCK,XP(E)::S(G)
      • S(d);N_GUARD::S(A)
      • B(e);SBLOCK::QAB(I)
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