MESON Chess Problem Database

Problem Display
PID: 90001 (1bK3n1/1N6/2kpn1N1/P7/P5p1/8/5RR1/7B w - - 0 1)

Paslack, Rainer

Die Schwalbe, 1995

1bK3n1/1N6/2kpn1N1/P7/P5p1/8/5RR1/7B

#2

8 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Rxg4#
    • 1...Sf6
      • 2.Se7#
    • 1...Sh6
      • 2.Se7#
    • 1...Se7+
      • 2.Sxe7#
  • Tries
    • 1.Rb2?
      • threat
        • 2.Rgc2#
      • 1...Se7+
        • 2.Sxe7#
      • 1...Kd5
        • 2.Rxg4#
      • 1...d5
        • 2.Rb6#
      • 1...Sc5!
    • 1.Rc2+?
      • 1...Kd5
        • 2.Rgd2#
        • 2.Rxg4#
      • 1...Sc5!
    • 1.Rf5?
      • threat
        • 2.Rc2#
      • 1...Se7+
        • 2.Sxe7#
      • 1...Sc5
        • 2.Sd8#
      • 1...d5!
  • Keys
    • 1.Rf6!
      • threat
        • 2.Rc2#
      • 1...Se7+
        • 2.Sxe7#
      • 1...Kd5
        • 2.Rxg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • K(b);S_FLIGHT::B(A)+R(C),XP(a)
    • S(f);N_GUARD::S(F)
    • S(f);CHECK,N_GUARD::S(F),XS(f)
  • Tries
    • Try
      • R(B);
      • Threat
        • B(A)+R(C),DCHECK
      • Vars
        • S(f);CHECK,N_GUARD::S(F),XS(f)
        • K(b);S_FLIGHT::B(A)+R(C),XP(a)
        • P(c);SBLOCK::R1(B)
      • Refutation
        • S(d);
    • Try
      • R(B);CHECK
      • Refutation
        • S(d);P_SPINS(d)
    • Try
      • R(B);
      • Threat
        • B(A)+R(C),DCHECK
      • Vars
        • S(f);CHECK,N_GUARD::S(F),XS(f)
        • S(d);N_GUARD::S(G)
      • Refutation
        • P(c);
  • Actual
    • R(B);
    • Threat
      • B(A)+R(C),DCHECK
    • Vars
      • S(f);CHECK,N_GUARD::S(F),XS(f)
      • K(b);S_FLIGHT::B(A)+R(C),XP(a)
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