MESON Chess Problem Database

Problem Display
PID: 276178 (8/1b1R4/4p2K/r2Bp3/1P1Np3/p3R3/N1p5/3kB3 w - - 0 1)

Velasco, Jose Luis

Die Schwalbe, 2024

8/1b1R4/4p2K/r2Bp3/1P1Np3/p3R3/N1p5/3kB3

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...c1S
      • 2.Sc3#
    • 1...c1B
      • 2.Sc3#
      • 2.Bb3#
  • Tries
    • 1.Sb5?
      • threat
        • 2.Sbc3#
        • 2.Bc6#
        • 2.Bxb7#
      • 1...Bxd5
        • 2.Sbc3#
      • 1...exd5
        • 2.Sbc3#
      • 1...c1Q
        • 2.Bb3#
      • 1...c1S
        • 2.Bb3#
      • 1...c1B
        • 2.Bb3#
      • 1...c1R
        • 2.Bb3#
      • 1...Ra6
        • 2.Sbc3#
        • 2.Bc6#
      • 1...Ba6
        • 2.Sbc3#
        • 2.Bb3#
        • 2.Bc4#
        • 2.Bxe4#
        • 2.Bc6#
        • 2.Bxe6#
        • 2.Bb7#
        • 2.Ba8#
      • 1...Bc6
        • 2.Sbc3#
        • 2.Bxc6#
      • 1...Ba8
        • 2.Sbc3#
        • 2.Bc6#
        • 2.Bb7#
        • 2.Bxa8#
      • 1...Bc8
        • 2.Sbc3#
      • 1...Rxb5!
    • 1.Bc3?
      • threat
        • 2.Re1#
      • 1...c1B
        • 2.Bb3#
      • 1...c1Q!
    • 1.Bb3?
      • threat
        • 2.Bxc2#
      • 1...exd4
        • 2.Rxd4#
      • 1...Rc5!
  • Keys
    • 1.Bxe6!
      • threat
        • 2.Bg4#
      • 1...c1S
        • 2.Sc3#
      • 1...Ra6
        • 2.Sc6#
      • 1...Ba6
        • 2.Sb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(b);SBLOCK::S(B)
  • Tries
    • Try
      • S(E);
      • Threat
        • DUALS(3)
      • Vars
        • B(h);P_SPINB(h),XB(F)::S(E)
        • P(g);P_SPINP(g),XB(F)::S(E)
        • P(b);P_PINR(C)::R(H)+B(F),DCHECK
        • P(b);::R(H)+B(F),DCHECK
        • B(h);::S(E)
      • Refutation
        • R(e);XS(E)
    • Try
      • B(A);
      • Threat
        • R1(C)
      • Vars
        • P(b);OGATEB,P_PINR(C)::B(F)
      • Refutation
        • P(b);P_PINR(C)
    • Try
      • B(F);P_PINP(b)
      • Threat
        • B(F),XP(b)
      • Vars
        • P(f);OGATE,XS(E)::R(H),XP(f)
      • Refutation
        • R(e);
  • Actual
    • B(F);XP(g)
    • Threat
      • B(F)
    • Vars
      • P(b);SBLOCK::S(B)
      • R(e);N_GUARD,P_PINB(F)::R(H)+S(E)
      • B(h);N_GUARD::R(H)+S(E)
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