MESON Chess Problem Database

Problem Display
PID: 61031 (Kb6/8/3PR3/3QNk1p/p6P/2Nr1bn1/3p3B/1r3R2 w - - 0 1)

Ellerman, Arnoldo

2nd Prize, Good Companions (December), 1918

Kb6/8/3PR3/3QNk1p/p6P/2Nr1bn1/3p3B/1r3R2

#2

9 + 9

3132 The Good Companion Two-Mover 1922

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Qe4#
  • Tries
    • 1.Qxf3+?
      • 1...Kxe6
        • 2.Qf6#
      • 1...Rxf3!
  • Keys
    • 1.Re7!
      • threat
        • 2.Rf7#
      • 1...Kf4
        • 2.Qe4#
      • 1...Kf6
        • 2.Rf7#
      • 1...Rxd5
        • 2.Rxf3#
      • 1...Rb7
        • 2.Qf7#
      • 1...Se4
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(g);P-FLIGHT,P_SPINS(e)::QAR1(E)
  • Tries
    • Try
      • Q(E);CHECK,N_SPINQ(E),XB(d)
      • Vars
        • K(g);OGATE,S_FLIGHT,XR(H)::QAR1(E)
      • Refutation
        • R(c);P_SPINR(c),XQ(E)
  • Actual
    • R(H);
    • Threat
      • R(H)
    • Vars
      • K(g);P-FLIGHT,P_SPINS(e)::QAR1(E)
      • K(g);P-FLIGHT::R1(H)
      • R(c);N_GUARD,XQ(E)::R(A),XB(d)
      • R(a);N_PINQ(E)::QAR2(E)
      • S(e);N_PINQ(E)::QAB1(E)
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