MESON Chess Problem Database

Problem Display
PID: 183161 (5k2/4NPr1/4K1Q1/8/8/8/8/8 w - - 0 1)

Baird, Edith Elina Helen (Mrs WJ)

Source?, 1907

5k2/4NPr1/4K1Q1/8/8/8/8/8

#2

4 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf7
      • 2.Qxf7#
      • 2.Qg8#
    • 1...Rh7
      • 2.Qg8#
    • 1...Rg8
      • 2.Qxg8#
      • 2.fxg8Q#
      • 2.fxg8R#
  • Tries
    • 1.Kd6?
      • 1...Rxf7
        • 2.Qg8#
      • 1...Rh7
        • 2.Qg8#
      • 1...Rg8
        • 2.Qxg8#
        • 2.fxg8Q#
        • 2.fxg8R#
      • 1...Rxg6+!
    • 1.Kd7?
      • 1...Rxf7
        • 2.Qg8#
      • 1...Rh7
        • 2.Qg8#
      • 1...Rg8
        • 2.Qxg8#
        • 2.fxg8Q#
        • 2.fxg8R#
      • 1...Rxg6!
    • 1.Sd5?
      • 1...Rxf7
        • 2.Qxf7#
      • 1...Rh7
        • 2.Qg8#
      • 1...Rg8
        • 2.Qxg8#
        • 2.fxg8Q#
        • 2.fxg8R#
      • 1...Rxg6+!
    • 1.Sf5?
      • threat
        • 2.Qxg7#
      • 1...Rxf7
        • 2.Qxf7#
      • 1...Rh7
        • 2.Qg8#
      • 1...Rg8
        • 2.Qxg8#
        • 2.fxg8Q#
        • 2.fxg8R#
      • 1...Rxg6+!
    • 1.Sc6?
      • 1...Rxf7
        • 2.Qxf7#
      • 1...Rh7
        • 2.Qg8#
      • 1...Rg8
        • 2.Qxg8#
        • 2.fxg8Q#
        • 2.fxg8R#
      • 1...Rxg6+!
    • 1.Sc8?
      • 1...Rxf7
        • 2.Qxf7#
      • 1...Rh7
        • 2.Qg8#
      • 1...Rg8
        • 2.Qxg8#
        • 2.fxg8Q#
        • 2.fxg8R#
      • 1...Rxg6+!
  • Keys
    • 1.Kf6!
      • threat
        • 2.Qxg7#
      • 1...Rxg6+
        • 2.Sxg6#
      • 1...Rxf7+
        • 2.Qxf7#
      • 1...Rh7
        • 2.Qg8#
      • 1...Rg8
        • 2.Qxg8#
        • 2.fxg8Q#
        • 2.fxg8R#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(a);OGATE::QAR1(B)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • R(a);OGATE,XP(D)::QAR1(B)
        • R(a);OGATE::QAR1(B)
      • Refutation
        • R(a);CHECK,XQ(B)
    • Try
      • K(A);S_FLIGHT
      • Vars
        • R(a);OGATE,P_PINS(C),XP(D)::QAR1(B)
        • R(a);OGATE::QAR1(B)
      • Refutation
        • R(a);XQ(B)
    • Try
      • S(C);
      • Vars
        • R(a);OGATE,XP(D)::QAR1(B),XR(a)
        • R(a);OGATE::QAR1(B)
      • Refutation
        • R(a);CHECK,XQ(B)
    • Try
      • S(C);
      • Threat
        • QAB1(B),XR(a)
      • Vars
        • R(a);OGATE,XP(D)::QAR1(B),XR(a)
        • R(a);OGATE::QAR1(B)
      • Refutation
        • R(a);CHECK,XQ(B)
    • Try
      • S(C);
      • Vars
        • R(a);OGATE,XP(D)::QAR1(B),XR(a)
        • R(a);OGATE::QAR1(B)
      • Refutation
        • R(a);CHECK,XQ(B)
    • Try
      • S(C);
      • Vars
        • R(a);OGATE,XP(D)::QAR1(B),XR(a)
        • R(a);OGATE::QAR1(B)
      • Refutation
        • R(a);CHECK,XQ(B)
  • Actual
    • K(A);P-FLIGHT
    • Threat
      • QAB1(B),XR(a)
    • Vars
      • R(a);CHECK,XQ(B)::S(C),XR(a)
      • R(a);CHECK,OGATE,XP(D)::QAR1(B),XR(a)
      • R(a);OGATE::QAR1(B)
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