MESON Chess Problem Database

Problem Display
PID: 182706 (8/B1p5/4P2N/4k1PK/B1Q4n/3p1r2/8/4r3 w - - 0 1)

Horn, C (= Laws, BG)

British Chess Magazine, 1913

8/B1p5/4P2N/4k1PK/B1Q4n/3p1r2/8/4r3

#2

7 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Sf5
      • 2.Sf7#
    • 1...c5
      • 2.Bb8#
    • 1...c6
      • 2.Bb8#
  • Tries
    • 1.Sg4+?
      • 1...Kd6
        • 2.Bc5#
      • 1...Kf5!
    • 1.Sf7+?
      • 1...Kf5
        • 2.Qg4#
      • 1...Rxf7!
    • 1.Qxc7+?
      • 1...Ke4
        • 2.Bc6#
      • 1...Kxe6
        • 2.Bb3#
      • 1...Kd5!
  • Keys
    • 1.Bb3!
      • threat
        • 2.Qd4#
      • 1...Kd6
        • 2.Qc5#
      • 1...Re4
        • 2.Qxc7#
      • 1...Rf4
        • 2.Qd5#
      • 1...Sf5
        • 2.Sf7#
      • 1...c5
        • 2.Bb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • S(d);SBLOCK,S_CUTR(c)::S(F)
    • P(f);OGATEB::B(G)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(e);S_FLIGHT::B(G)
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(e);P-FLIGHT::QAB1(B)
      • Refutation
        • R(c);XS(F)
    • Try
      • Q(B);CHECK,XP(f)
      • Vars
        • K(e);P-FLIGHT::B(A)
        • K(e);P-FLIGHT,XP(E)::B(A)
      • Refutation
        • K(e);P-FLIGHT
  • Actual
    • B(A);
    • Threat
      • QAB1(B)
    • Vars
      • K(e);S_FLIGHT::QAB1(B)
      • R(a);SBLOCK::QAB(B),XP(f)
      • R(c);SBLOCK::QAR1(B)
      • S(d);SBLOCK,S_CUTR(c)::S(F)
      • P(f);OGATEB::B(G)
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