MESON Chess Problem Database

Problem Display
PID: 21015 (R7/R2pk3/N1P1Bn2/N7/K7/6Q1/8/B7 w - - 0 1)

Janet, Frank

1st HM., Good Companions (May Meredith Ty.), 1915

R7/R2pk3/N1P1Bn2/N7/K7/6Q1/8/B7

#2

9 + 3

3132 The Good Companion Two-Mover 1922

SOLUTION

  • SOUND
  • Tries
    • 1.Sc5?
      • 1...Se4
        • 2.Rxd7#
      • 1...Sg4
        • 2.Rxd7#
      • 1...Sd5
        • 2.Rxd7#
      • 1...Sh5
        • 2.Rxd7#
      • 1...Sh7
        • 2.Rxd7#
      • 1...Sg8
        • 2.Rxd7#
      • 1...Se8!
    • 1.Rxd7+?
      • 1...Kxe6
        • 2.Qe5#
      • 1...Sxd7!
    • 1.Qe5?
      • threat
        • 2.Ba2#
        • 2.Bb3#
        • 2.Bc4#
        • 2.Bd5#
        • 2.Bg8#
      • 1...Sg4
        • 2.Rxd7#
      • 1...Sd5
        • 2.Bxd5#
        • 2.Bg8#
        • 2.Rxd7#
      • 1...Sg8
        • 2.Ba2#
        • 2.Bb3#
        • 2.Bc4#
        • 2.Bd5#
        • 2.Bxg8#
        • 2.Rxd7#
      • 1...Se8!
  • Keys
    • 1.Sc7!
      • 1...dxc6
        • 2.Sxc6#
      • 1...dxe6
        • 2.Sd5#
      • 1...Se8
        • 2.Rxe8#
      • 1...Se4
        • 2.Re8#
      • 1...Sg4
        • 2.Re8#
      • 1...Sd5
        • 2.Re8#
      • 1...Sh5
        • 2.Re8#
      • 1...Sh7
        • 2.Re8#
      • 1...Sg8
        • 2.Re8#
      • 1...d5
        • 2.Qa3#
      • 1...d6
        • 2.Qg7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Vars
        • S(a);N_GUARD::R1(H),XP(b)
      • Refutation
        • S(a);
    • Try
      • R(H);CHECK,XP(b)
      • Vars
        • K(c);P-FLIGHT,XB(G)::QAR1(B)
      • Refutation
        • S(a);XR(H)
    • Try
      • Q(B);
      • Threat
        • DUALS(5)
      • Vars
        • S(a);N_GUARD::R1(H),XP(b)
      • Refutation
        • S(a);
  • Actual
    • S(E);N_PINP(b)
    • Vars
      • P(b);XP(F)::S(D),XP(b)
      • P(b);SBLOCK,XB(G)::R(H)+S(E),DCHECK
      • S(a);N_GUARD::R1(I),XS(a)
      • S(a);N_GUARD::R1(I)
      • P(b);N_GUARD::QAB(B)
      • P(b);SBLOCK::QAR2(B)
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