MESON Chess Problem Database

Problem Display
PID: 15955 (3Q2B1/8/p1k5/r4n2/1RP2pN1/1n2b2K/b6P/1q2r3 w - - 0 1)

Hoffmann, Fritz

The Problemist, 1989

3Q2B1/8/p1k5/r4n2/1RP2pN1/1n2b2K/b6P/1q2r3

#2

7 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qb6#
    • 1...Rc5
      • 2.Rb6#
    • 1...Bc5
      • 2.Bd5#
    • 1...Sc5
      • 2.Se5#
      • 2.Bd5#
  • Tries
    • 1.Se5+?
      • 1...Kc5
        • 2.Qb6#
      • 1...Rxe5!
    • 1.Bd5+?
      • 1...Kc5
        • 2.Qb6#
      • 1...Rxd5!
    • 1.Rb7?
      • threat
        • 2.Qc7#
      • 1...Kc5
        • 2.Qb6#
        • 2.Qd5#
      • 1...Bb6
        • 2.Qxb6#
      • 1...Kxb7!
  • Keys
    • 1.c5!
      • threat
        • 2.Qc8#
      • 1...Kxc5
        • 2.Qb6#
      • 1...Rxc5
        • 2.Rb6#
      • 1...Bxc5
        • 2.Bd5#
      • 1...Sxc5
        • 2.Se5#
      • 1...Sd6
        • 2.Qxd6#
      • 1...Se7
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(j);P-FLIGHT::QAB1(F)
    • R(g);SBLOCK,S_CUTB(e)::R1(C)
    • B(e);SBLOCK,S_CUTR(g)::B(G)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(j);P-FLIGHT::QAB1(F)
      • Refutation
        • R(g);XS(E)
    • Try
      • B(G);CHECK
      • Vars
        • K(j);P-FLIGHT::QAB1(F)
      • Refutation
        • R(g);XB(G)
    • Try
      • R(C);
      • Threat
        • QAR1(F)
      • Vars
        • B(e);N_GUARD::QAR1(F),XB(e)
      • Refutation
        • K(j);S_FLIGHT,XR(C)
  • Actual
    • P(D);
    • Threat
      • QAR2(F)
    • Vars
      • K(j);P-FLIGHT,XP(D)::QAB1(F)
      • R(g);SBLOCK,XP(D)::R1(C)
      • B(e);SBLOCK,XP(D)::B(G)
      • S(d);SBLOCK,XP(D)::S(E)
      • S(h);N_GUARD::QAR1(F),XS(h)
      • S(h);N_GUARD::QAR1(F)
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