MESON Chess Problem Database

Problem Display
PID: 152131 (bq2r2n/2p2p1K/4P3/2p2k2/r4PR1/2B3bn/2N1Q1N1/1B6 w - - 0 1)

Windle, REL

1st HM., Good Companions (April), 1915

bq2r2n/2p2p1K/4P3/2p2k2/r4PR1/2B3bn/2N1Q1N1/1B6

#2

9 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe6
      • 2.Sce3#
    • 1...Bh2
      • 2.Sh4#
    • 1...Bxf4
      • 2.Sh4#
    • 1...Bh4
      • 2.Sxh4#
    • 1...Sg1
      • 2.Rg5#
    • 1...Sf2
      • 2.Rg5#
    • 1...Sg5+
      • 2.Rxg5#
    • 1...c6
      • 2.Sb4#
    • 1...fxe6
      • 2.Sce3#
    • 1...f6
      • 2.Sd4#
  • Tries
    • 1.Sge3+?
      • 1...Ke4
        • 2.Sb4#
      • 1...Kxe6!
    • 1.Rxg3?
      • threat
        • 2.Qe5#
      • 1...Sg5+
        • 2.Rxg5#
      • 1...Rxe6
        • 2.Sce3#
      • 1...Re4
        • 2.Qg4#
      • 1...Be4
        • 2.Qg4#
      • 1...c6
        • 2.Sb4#
      • 1...f6
        • 2.Sd4#
      • 1...Sg6!
  • Keys
    • 1.Rg7!
      • threat
        • 2.Qe5#
      • 1...Sg5+
        • 2.Rxg5#
      • 1...Rxe6
        • 2.Sce3#
      • 1...Bxf4
        • 2.Sh4#
      • 1...Re4
        • 2.Qg4#
      • 1...Be4
        • 2.Qg4#
      • 1...Sg6
        • 2.Rxf7#
      • 1...c6
        • 2.Sb4#
      • 1...f6
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(j);SBLOCK,XP(H)::B(A)+S(B),DCHECK
    • B(a);N_GUARD::S(D)
    • B(a);N_GUARD,XP(F)::S(D)
    • B(a);N_GUARD::S(D),XB(a)
    • S(b);N_GUARD::R1(G)
    • S(b);CHECK,N_GUARD::R1(G),XS(b)
    • P(f);S_CUTB(h)::B(A)+S(B)
    • P(g);SBLOCK,XP(H)::B(A)+S(B),DCHECK
    • P(g);SBLOCK::B(A)+S(B),DCHECK
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(e);S_FLIGHT::B(A)+S(B)
      • Refutation
        • K(e);S_FLIGHT,XP(H)
    • Try
      • R(G);XB(a)
      • Threat
        • QAR1(C)
      • Vars
        • S(b);CHECK,N_GUARD::R1(G),XS(b)
        • R(j);SBLOCK,XP(H)::B(A)+S(B),DCHECK
        • R(c);SBLOCK::QAB1(C)
        • B(h);SBLOCK::QAB1(C)
        • P(f);S_CUTB(h)::B(A)+S(B)
        • P(g);SBLOCK::B(A)+S(B),DCHECK
      • Refutation
        • S(k);
  • Actual
    • R(G);
    • Threat
      • QAR1(C)
    • Vars
      • S(b);CHECK,N_GUARD::R1(G),XS(b)
      • R(j);SBLOCK,XP(H)::B(A)+S(B),DCHECK
      • B(a);N_GUARD,SBLOCK,XP(F)::S(D)
      • R(c);SBLOCK::QAB1(C)
      • B(h);SBLOCK::QAB1(C)
      • S(k);N_GUARD::R(G),XP(g)
      • P(f);S_CUTB(h)::B(A)+S(B)
      • P(g);SBLOCK::B(A)+S(B),DCHECK
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