MESON Chess Problem Database

Problem Display
PID: 276110 (8/3RQ3/1p6/n2nN3/2Nk4/1Rr5/BPP5/1K6 w - - 0 1)

Cornejo, Jose Jesus

To Mat, 1957

8/3RQ3/1p6/n2nN3/2Nk4/1Rr5/BPP5/1K6

#2

9 + 5

15601 Albrecht-Leiss-Degener Collection 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc4
      • 2.Sf3#
    • 1...Sxc4
      • 2.Sc6#
  • Tries
    • 1.Sf3+?
      • 1...Kxc4
        • 2.Rb4#
      • 1...Rxf3!
    • 1.Sc6+?
      • 1...Kxc4
        • 2.Rb4#
      • 1...Sxc6!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Qh4#
      • 1...Kxc4
        • 2.Rb4#
        • 2.Qe4#
      • 1...Rxd3
        • 2.Rxd3#
      • 1...Rxc4
        • 2.Qe5#
      • 1...Sxc4
        • 2.bxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(a);N_GUARD,SBLOCK,XS(F)::S(G)
    • S(c);N_GUARD,SBLOCK,XS(F)::S(G)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(b);N_SPINS(d),P-FLIGHT,XS(F)::B(B)+R(E),DCHECK
      • Refutation
        • R(a);XS(G)
    • Try
      • S(G);CHECK
      • Vars
        • K(b);N_SPINS(d),P-FLIGHT,XS(F)::B(B)+R(E),DCHECK
      • Refutation
        • S(c);XS(G)
  • Actual
    • S(G);
    • Threat
      • QAR(I)
    • Vars
      • R(a);OGATE,XS(G)::R1(E),XR(a)
      • R(a);SBLOCK,XS(F)::QAB1(I)
      • S(c);SBLOCK,XS(F)::P(C),XR(a)
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