MESON Chess Problem Database

Problem Display
PID: 175150 (1n6/3r1RPK/1p2k3/1P1RNr1p/4Np2/5B2/4Q3/8 w - - 0 1)

Kondelik, Karel

3rd Prize, Literary Digest, 1902

1n6/3r1RPK/1p2k3/1P1RNr1p/4Np2/5B2/4Q3/8

#2

9 + 7

5454 Near Snap 2018
6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe5
      • 2.Sg5#
    • 1...Rg5
      • 2.Sxg5#
  • Tries
    • 1.Sg6?
      • threat
        • 2.Sg5#
      • 1...Kxf7
        • 2.g8Q#
      • 1...Rfxd5
        • 2.Rf6#
      • 1...Rfxf7
        • 2.Re5#
      • 1...Rdxd5
        • 2.Re7#
      • 1...Rdxf7
        • 2.Rd6#
      • 1...Rg5
        • 2.Sxg5#
      • 1...Kxd5!
    • 1.Rd6+?
      • 1...Kxe5
        • 2.Qb2#
      • 1...Rxd6!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Sg5#
      • 1...Kxd5
        • 2.Qa2#
      • 1...Kxf7
        • 2.g8Q#
      • 1...Rfxd5
        • 2.Rf6#
      • 1...Rfxf7
        • 2.Re5#
      • 1...Rdxd5
        • 2.Re7#
      • 1...Rdxf7
        • 2.Rd6#
      • 1...Rg5
        • 2.Sxg5#

This anticipates 18050(1953)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • R(b);N_GUARD,XS(F)::S(C)
    • R(b);N_GUARD::S(C),XR(b)
  • Tries
    • Try
      • S(F);
      • Threat
        • QAR(A)+S(C),DCHECK
      • Vars
        • K(e);S_FLIGHT,XR(G)::P=Q
        • R(b);N_GUARD,SBLOCK,XR(E)::R1(G)
        • R(b);N_GUARD,P_PINP(H),SBLOCK,XR(G)::R1(E)
        • R(f);N_GUARD,SBLOCK,XR(E)::R1(G)
        • R(f);N_GUARD,P_PINP(H),SBLOCK,XR(G)::R1(E)
        • R(b);::QAR(A)+S(C),DCHECK,XR(b)
      • Refutation
        • K(e);S_FLIGHT,XR(E)
    • Try
      • R(E);CHECK
      • Vars
        • K(e);P-FLIGHT,XS(F)::QAB(A)
      • Refutation
        • R(f);XR(E)
  • Actual
    • S(F);
    • Threat
      • QAR(A)+S(C),DCHECK
    • Vars
      • K(e);OGATEB,S_FLIGHT,XR(E)::QAB(A)
      • K(e);S_FLIGHT,XR(G)::P=Q
      • R(b);N_GUARD,SBLOCK,XR(E)::R1(G)
      • R(b);N_GUARD,P_PINP(H),SBLOCK,XR(G)::R1(E)
      • R(f);N_GUARD,SBLOCK,XR(E)::R1(G)
      • R(f);N_GUARD,P_PINP(H),SBLOCK,XR(G)::R1(E)
      • R(b);::QAR(A)+S(C),DCHECK,XR(b)
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