MESON Chess Problem Database

Problem Display
PID: 51743 (8/2rpB2K/N1P5/3k4/4R3/N3P3/n7/7B w - - 0 1)

Hannelius, Jan Ingvar

Sinfonie Scacchistiche, 1970

8/2rpB2K/N1P5/3k4/4R3/N3P3/n7/7B

#2

8 + 4

3310 2345 Chess Problems 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc6
      • 2.Re6#
    • 1...Sc1
      • 2.Sb4#
    • 1...Sc3
      • 2.Sb4#
    • 1...Sb4
      • 2.Sxb4#
    • 1...dxc6
      • 2.Sxc7#
  • Tries
    • 1.Bc5?
      • threat
        • 2.Re7#
        • 2.Re8#
      • 1...dxc6+
        • 2.Re7#
      • 1...d6+
        • 2.Re7#
      • 1...Kxc6
        • 2.Re6#
      • 1...Sc3!
  • Keys
    • 1.Bf8!
      • threat
        • 2.Re8#
      • 1...dxc6+
        • 2.Sxc7#
      • 1...d6+
        • 2.Re7#
      • 1...Kxc6
        • 2.Re6#
      • 1...Sc3
        • 2.Sb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • K(b);S_FLIGHT,XP(F)::B(A)+R(D),DCHECK
    • S(a);N_GUARD::S(E)
    • S(a);N_GUARD::S(E),XS(a)
    • P(d);P_PINB(G),SBLOCK,XP(F)::S(E),XR(c)
  • Tries
    • Try
      • B(G);
      • Threat
        • DUALS(2)
      • Vars
        • P(d);CHECK,SBLOCK,XP(F)::B(A)+R(D)
        • P(d);CHECK::B(A)+R(D)
        • K(b);S_FLIGHT,XP(F)::B(A)+R(D),DCHECK
      • Refutation
        • S(a);
  • Actual
    • B(G);
    • Threat
      • B(A)+R(D)
    • Vars
      • P(d);CHECK,SBLOCK,XP(F)::S(E),XR(c)
      • P(d);CHECK,SBLOCK::B(A)+R(D)
      • K(b);S_FLIGHT,XP(F)::B(A)+R(D),DCHECK
      • S(a);N_GUARD::S(E)
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