MESON Chess Problem Database

Problem Display
PID: 273957 (1n4r1/1pkpBN2/rN3R2/2P1P3/p3R3/8/K1Q4b/7B w - - 0 1)

Paslack, Rainer

Die Schwalbe, 2023

1n4r1/1pkpBN2/rN3R2/2P1P3/p3R3/8/K1Q4b/7B

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb6
      • 2.cxb6#
    • 1...Rg1
      • 2.Bd8#
    • 1...Rg2
      • 2.Bd8#
    • 1...Rg3
      • 2.Bd8#
    • 1...Rg4
      • 2.Bd8#
    • 1...Rg5
      • 2.Bd8#
    • 1...Rg6
      • 2.Bd8#
    • 1...Rg7
      • 2.Bd8#
    • 1...Rc8
      • 2.Sd5#
    • 1...Rd8
      • 2.Bxd8#
    • 1...Sc6
      • 2.Bd6#
  • Tries
    • 1.Rb4?
      • threat
        • 2.Bd6#
      • 1...Rxb6
        • 2.cxb6#
      • 1...d5
        • 2.cxd5 ep#
      • 1...Rg2
        • 2.Bd8#
      • 1...d6
        • 2.Bxd6#
        • 2.cxd6#
      • 1...Bxe5!
  • Keys
    • 1.Ref4!
      • threat
        • 2.Bd6#
      • 1...Rxb6
        • 2.cxb6#
      • 1...d5
        • 2.exd5 ep#
      • 1...Rg2
        • 2.Bd8#
      • 1...d6
        • 2.Bxd6#
        • 2.exd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 9
  • Sets
    • R(c);OGATE,XS(G)::QAR(C)+P(E)DCHECK,XR(c)
    • R(h);N_GUARD::B(I)
    • R(h);N_GUARD,P_PINQ(C)::B(I)
    • R(h);SBLOCK::S(G)
    • R(h);N_GUARD::B(I),XR(h)
    • S(g);SBLOCK::B(I)
  • Tries
    • Try
      • R(D);
      • Threat
        • B(I)
      • Vars
        • R(c);OGATE,XS(G)::QAR(C)+P(E)DCHECK,XR(c)
        • P(f);OGATE::QAR(C)+P(E)DCHECK,XP(f),EP
        • R(h);N_GUARD,P_PINQ(C)::B(I)
      • Refutation
        • B(a);XP(F)
  • Actual
    • R(D);
    • Threat
      • B(I)
    • Vars
      • R(c);OGATE,XS(G)::QAR(C)+P(E)DCHECK,XR(c)
      • P(f);OGATE::P(F),XP(f),EP
      • R(h);N_GUARD,P_PINQ(C)::B(I)
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Developed and maintained by Brian Stephenson.
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