MESON Chess Problem Database

Problem Display
PID: 81549 (4RB1n/2P5/4Bp2/K2Pk2q/b1p5/n1N1P1N1/8/8 w - - 0 1)

Heyl, Peter

Paslack, Rainer

Die Schwalbe, 2008

4RB1n/2P5/4Bp2/K2Pk2q/b1p5/n1N1P1N1/8/8

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.Bd7#
    • 1...Qe2
      • 2.Bd7#
    • 1...Qf3
      • 2.Bd7#
    • 1...Qh1
      • 2.Bd7#
    • 1...Qh2
      • 2.Bd7#
    • 1...Qh4
      • 2.Bd7#
    • 1...Qg5
      • 2.Bd7#
    • 1...Qh6
      • 2.Bd7#
    • 1...Bd1
      • 2.Bf7#
    • 1...Bc2
      • 2.Bf7#
    • 1...Bb3
      • 2.Bf7#
    • 1...Sb5
      • 2.Bf7#
    • 1...Sf7
      • 2.Bd7#
  • Tries
    • 1.Sce4?
      • threat
        • 2.Bd6#
      • 1...Sb5
        • 2.Bf7#
      • 1...Sf7!
    • 1.Sb5?
      • threat
        • 2.Bf7#
        • 2.Bd6#
      • 1...Qxe8
        • 2.Bd6#
      • 1...Sxb5
        • 2.Bf7#
      • 1...f5
        • 2.Bg7#
      • 1...Qg4
        • 2.Bd6#
      • 1...Qf7
        • 2.Bxf7#
        • 2.Bd6#
      • 1...Qh3
        • 2.Bd6#
      • 1...Qf5
        • 2.Bd6#
      • 1...Sg6
        • 2.Bd6#
      • 1...Sf7
        • 2.Bxf7#
      • 1...Bxb5!
    • 1.Sge4?
      • threat
        • 2.Bd6#
      • 1...Sf7
        • 2.Bd7#
      • 1...Sb5!
  • Keys
    • 1.c8S!
      • threat
        • 2.Bd6#
      • 1...f5
        • 2.Bg7#
      • 1...Sb5
        • 2.Bf7#
      • 1...Sf7
        • 2.Bd7#

This is a version of 79409

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 11
  • Sets
    • Q(e);N_GUARD::R(H)+B(F)
    • B(b);N_GUARD::R(H)+B(F)
    • S(a);S_CUTB(b)::R(H)+B(F)
    • S(g);S_CUTQ(e)::R(H)+B(F)
  • Tries
    • Try
      • S(A);
      • Threat
        • B(I)
      • Vars
        • S(a);S_CUTB(b)::R(H)+B(F)
      • Refutation
        • S(g);
    • Try
      • S(A);
      • Threat
        • DUALS(2)
      • Vars
        • Q(e);XR(H)::B(I)
        • S(a);XS(A)::R(H)+B(F)
        • P(f);OGATEB::B(I)
        • Q(e);::B(I)
        • S(g);::B(I)
        • S(g);::R(H)+B(F),XS(g)
      • Refutation
        • B(b);XS(A)
    • Try
      • S(C);
      • Threat
        • B(I)
      • Vars
        • S(g);S_CUTQ(e)::R(H)+B(F)
      • Refutation
        • S(a);
  • Actual
    • P(G);
    • Threat
      • B(I)
    • Vars
      • P(f);OGATEB::B(I)
      • S(a);S_CUTB(b)::R(H)+B(F)
      • S(g);S_CUTQ(e)::R(H)+B(F)
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