MESON Chess Problem Database

Problem Display
PID: 181268 (8/8/8/5N2/8/3RRrP1/5P1k/3K1Q2 w - - 0 1)

Ferron de la Fuente, Ernesto

1st Prize, Problem Observer, 2014

8/8/8/5N2/8/3RRrP1/5P1k/3K1Q2

#2

7 + 2

136 Problem Observer 2015

SOLUTION

  • SOUND
  • Tries
    • 1.Re2?
      • 1...Rxf2
        • 2.Rxf2#
      • 1...Rxg3
        • 2.fxg3#
      • 1...Rxf5
        • 2.f4#
      • 1...Rf4
        • 2.f3#
      • 1...Re3
        • 2.fxe3#
      • 1...Rxd3+!
  • Keys
    • 1.Rd2!
      • 1...Rxf2
        • 2.Rxf2#
      • 1...Rxe3
        • 2.fxe3#
      • 1...Rxg3
        • 2.fxg3#
      • 1...Rxf5
        • 2.f4#
      • 1...Rf4
        • 2.f3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(E);
      • Vars
        • R(b);OGATE,P_SPINR(b),XP(C)::R(E),XR(b)
        • R(b);OGATE,XP(F)::R(E)+P(C),XR(b)
        • R(b);OGATE,XS(G)::R(E)+P(C)
        • R(b);OGATE::R(E)+P(C)
        • R(b);OGATE::R(E)+P(C),XR(b)
      • Refutation
        • R(b);CHECK,XR(D)
  • Actual
    • R(D);
    • Vars
      • R(b);OGATE,P_SPINR(b),XP(C)::R(D),XR(b)
      • R(b);OGATE,XR(E)::R(D)+P(C),XR(b)
      • R(b);OGATE,XP(F)::R(D)+P(C),XR(b)
      • R(b);OGATE,XS(G)::R(D)+P(C)
      • R(b);OGATE::R(D)+P(C)
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