MESON Chess Problem Database

Problem Display
PID: 78805 (1N5K/p7/8/pkB4R/pn1R4/b2P4/1pn1B3/qQN5 w - - 0 1)

Sabol, Frantisek

2nd Comm., Sachova skladba, 2001-2002

1N5K/p7/8/pkB4R/pn1R4/b2P4/1pn1B3/qQN5

#2

9 + 9

6168 Czech Album (2001-2003) 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Sxd3
      • 2.Bxd3#
    • 1...bxc1S
      • 2.Bxa7#
    • 1...bxc1R
      • 2.Bxa7#
  • Tries
    • 1.Rxb4+?
      • 1...Bxb4
        • 2.d4#
      • 1...axb4
        • 2.Bg1#
        • 2.Bf2#
        • 2.Be3#
        • 2.Bd4#
        • 2.Bxa7#
      • 1...Sxb4!
  • Keys
    • 1.Rd7!
      • threat
        • 2.Rb7#
      • 1...bxc1Q+
        • 2.d4#
      • 1...bxc1S+
        • 2.Bd4#
      • 1...bxc1B+
        • 2.d4#
      • 1...bxc1R+
        • 2.Bd4#
        • 2.d4#
      • 1...Sxd3
        • 2.Bxd3#
      • 1...Sd5
        • 2.d4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • S(f);OGATE,P_SPINP(b),P_SPINS(f),XP(D)::B(C),XS(f)
    • P(b);P_PINR(E),P_SPINS(f),XS(B)::R(G)+B(F),XP(i)
  • Tries
    • Try
      • R(E);CHECK,XS(f)
      • Vars
        • B(d);XR(E)::B(C)+P(D)
      • Refutation
        • S(c);XR(E)
  • Actual
    • R(E);
    • Threat
      • R(E)
    • Vars
      • P(b);CHECK,P_SPINS(f),XS(B)::B(C)+P(D)
      • P(b);CHECK,P_SPINS(f),XS(B)::R(G)+B(F)
      • S(f);OGATE,P_SPINP(b),P_SPINS(f),XP(D)::B(C),XS(f)
      • S(f);N_GUARD,P_SPINP(b)::B(C)+P(D)
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