MESON Chess Problem Database

Problem Display
PID: 86729 (1Q1B4/PNN5/8/5r2/3k1p2/4pP2/b2PB3/K2R4 w - - 0 1)

Lamba, Stelian

Umenie 64, 2003

1Q1B4/PNN5/8/5r2/3k1p2/4pP2/b2PB3/K2R4

#2

10 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.d4#
    • 1...Rd5
      • 2.Se6#
    • 1...Rf6
      • 2.Bxf6#
    • 1...Bd5
      • 2.Sb5#
  • Tries
    • 1.Sb5+?
      • 1...Kd5
        • 2.Qd6#
      • 1...Rxb5!
    • 1.Se6+?
      • 1...Kd5
        • 2.Qd6#
      • 1...Bxe6!
  • Keys
    • 1.Sd5!
      • threat
        • 2.dxe3#
      • 1...Kxd5
        • 2.Qd6#
      • 1...Rxd5
        • 2.Qxf4#
      • 1...Bxd5
        • 2.Bb6#
      • 1...exd2
        • 2.Rxd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • K(c);OGATE,S_FLIGHT::P(C)
    • R(e);SBLOCK,S_CUTB(a)::S(H)
    • R(e);N_GUARD::B(J),XR(e)
    • B(a);SBLOCK,S_CUTR(e)::S(H)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(I)
      • Refutation
        • R(e);XS(H)
    • Try
      • S(H);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(I)
      • Refutation
        • B(a);XS(H)
  • Actual
    • S(H);
    • Threat
      • R(B)+P(C)DCHECK,XP(b)
    • Vars
      • K(c);OGATEB,P-FLIGHT,XS(H)::QAR1(I)
      • R(e);N_GUARD,SBLOCK,XS(H)::QAR2(I),XP(d)
      • B(a);SBLOCK,XS(H)::B(J)
      • P(b);OGATE,P_SPINP(b),XP(C)::R(B),XP(b)
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Developed and maintained by Brian Stephenson.
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