MESON Chess Problem Database

Problem Display
PID: 49678 (1b4rn/q2B2R1/1P2N3/1nRPrk1P/p2Pp2B/8/5K2/1Q6 w - - 0 1)

Eddy, Edwin John

The Puzzler, 1933

1b4rn/q2B2R1/1P2N3/1nRPrk1P/p2Pp2B/8/5K2/1Q6

#2

11 + 9

SOLUTION

  • SOUND
  • Tries
    • 1.Ke3?
      • threat
        • 2.Qf1#
      • 1...Rxd5
        • 2.Sc7#
        • 2.Qxe4#
      • 1...Rxe6
        • 2.Bxe6#
        • 2.Qxe4#
        • 2.d6#
      • 1...Rxg7
        • 2.Sxg7#
      • 1...Sxd4
        • 2.Sxd4#
      • 1...Sg6!
    • 1.Sc7+?
      • 1...Kf4
        • 2.Bg3#
      • 1...Re6!
    • 1.Qc1?
      • threat
        • 2.Qf4#
        • 2.Qg5#
      • 1...Rxd5
        • 2.Sc7#
        • 2.Qg5#
      • 1...Rxe6
        • 2.Bxe6#
        • 2.Qg5#
        • 2.d6#
      • 1...Rxg7
        • 2.Sxg7#
        • 2.Qf4#
      • 1...Sg6
        • 2.Qg5#
      • 1...Sf7
        • 2.Qf4#
      • 1...e3+!
  • Keys
    • 1.Kg3!
      • threat
        • 2.Qf1#
      • 1...Rxd5+
        • 2.Sc7#
      • 1...Rxe6+
        • 2.d6#
      • 1...Rxg7+
        • 2.Sxg7#
      • 1...Sxd4
        • 2.Sxd4#
      • 1...Sg6
        • 2.Rf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Threat
        • QAR(A)
      • Vars
        • R(h);XR(K)::B(J)+S(I),DCHECK,XR(h)
        • S(c);XP(C)::B(J)+S(I),DCHECK,XS(c)
      • Refutation
        • S(i);
    • Try
      • S(I);CHECK
      • Vars
        • K(e);N_SPINP(b),P-FLIGHT::B(D)
      • Refutation
        • R(d);P_SPINR(d)
    • Try
      • Q(A);N_PINP(b)
      • Threat
        • DUALS(2)
      • Vars
        • S(i);::QAR1(A)
      • Refutation
        • P(b);CHECK
  • Actual
    • K(B);P_SPINR(K),S_FLIGHT
    • Threat
      • QAR(A)
    • Vars
      • R(d);CHECK,N_GUARD,P_SPINR(d),XP(F)::B(J)+S(I)
      • R(d);CHECK,P_SPINR(d),XS(I)::R(E)+P(F)
      • R(h);CHECK,XR(K)::B(J)+S(I),DCHECK,XR(h)
      • S(c);XP(C)::B(J)+S(I),DCHECK,XS(c)
      • S(i);N_PINR(K)::R(K)
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