MESON Chess Problem Database

Problem Display
PID: 107929 (8/8/2P5/1NBk4/3P4/5R2/K5R1/7B w - - 0 1)

Coutinho, Jose Ernesto

Canadian Chess Chat, 1980

8/8/2P5/1NBk4/3P4/5R2/K5R1/7B

#2

8 + 1

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ke6
      • 2.Sc7#
  • Tries
    • 1.Sc7+?
      • 1...Kc4
        • 2.Rc2#
      • 1...Ke4
        • 2.Re2#
        • 2.Rg4#
      • 1...Kxc6!
    • 1.Rc2?
      • threat
        • 2.Re3#
        • 2.Rf6#
      • 1...Ke4
        • 2.Sc3#
      • 1...Ke6
        • 2.Sc7#
      • 1...Kxc6!
    • 1.Rg5+?
      • 1...Kc4
        • 2.Sa3#
        • 2.Sd6#
      • 1...Ke4
        • 2.Sc3#
        • 2.Sd6#
        • 2.Re5#
      • 1...Ke6
        • 2.Sc7#
        • 2.Re5#
        • 2.d5#
      • 1...Kxc6!
    • 1.Rg6?
      • threat
        • 2.Rc3#
      • 1...Ke4
        • 2.Sc3#
      • 1...Kc4!
    • 1.Rg7?
      • 1...Ke4
        • 2.Sc3#
      • 1...Kxc6
        • 2.Rb3#
      • 1...Ke6
        • 2.Sc7#
      • 1...Kc4!
    • 1.Rb3?
      • 1...Kc4
        • 2.Rc2#
      • 1...Ke4
        • 2.Rf2#
      • 1...Kxc6
        • 2.Rg7#
      • 1...Ke6!
    • 1.Rf6?
      • threat
        • 2.Rc2#
      • 1...Ke4
        • 2.Rg3#
      • 1...Kc4!
  • Keys
    • 1.Rb2!
      • 1...Kc4
        • 2.Rc3#
      • 1...Ke4
        • 2.Sc3#
      • 1...Kxc6
        • 2.Rf7#
      • 1...Ke6
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::S(F)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(a);S_FLIGHT::R(C)
      • Refutation
        • K(a);S_FLIGHT,XP(H)
    • Try
      • R(C);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);S_FLIGHT::S(F)
      • Refutation
        • K(a);S_FLIGHT,XP(H)
    • Try
      • R(C);CHECK
      • Refutation
        • K(a);S_FLIGHT,XP(H)
    • Try
      • R(C);
      • Threat
        • B(A)+R(D)
      • Vars
        • K(a);S_FLIGHT::S(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(a);S_FLIGHT::S(F)
        • K(a);S_FLIGHT,XP(H)::B(A)+R(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(D);
      • Vars
        • K(a);S_FLIGHT::R(C)
        • K(a);S_FLIGHT::B(A)+R(C)
        • K(a);S_FLIGHT,XP(H)::B(A)+R(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(D);
      • Threat
        • B(A)+R(C)
      • Vars
        • K(a);S_FLIGHT::B(A)+R(C)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(C);
    • Vars
      • K(a);S_FLIGHT::R1(D)
      • K(a);S_FLIGHT::S(F)
      • K(a);S_FLIGHT,XP(H)::B(A)+R(D)
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