MESON Chess Problem Database

Problem Display
PID: 75616 (4r3/b1Q1p1KP/1rpPkP2/4B3/2PP1RN1/4Rp1B/8/4qb2 w - - 0 1)

Rice, John Michael

3rd Prize, Messigny, 2007

4r3/b1Q1p1KP/1rpPkP2/4B3/2PP1RN1/4Rp1B/8/4qb2

#2

12 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Ra8
      • 2.Qxe7#
    • 1...Rb8
      • 2.Qxe7#
    • 1...Rc8
      • 2.Qxe7#
      • 2.Qxc8#
    • 1...Rd8
      • 2.Qxe7#
    • 1...Rf8
      • 2.Qxe7#
    • 1...Rg8+
      • 2.hxg8Q#
      • 2.hxg8B#
    • 1...Rh8
      • 2.Qxe7#
    • 1...Be2
      • 2.Sf2#
      • 2.Sh2#
      • 2.Sh6#
    • 1...c5
      • 2.d5#
    • 1...exd6
      • 2.Qxd6#
      • 2.Qf7#
    • 1...exf6
      • 2.Rxf6#
      • 2.Qf7#
  • Tries
    • 1.dxe7?
      • threat
        • 2.Qd6#
      • 1...Rxe7+
        • 2.Qxe7#
      • 1...Rg8+
        • 2.hxg8Q#
        • 2.hxg8B#
      • 1...Qb4
        • 2.Bd6#
      • 1...Rd8
        • 2.exd8S#
      • 1...c5
        • 2.d5#
      • 1...Bb8!
  • Keys
    • 1.fxe7!
      • threat
        • 2.Rf6#
      • 1...Rxe7+
        • 2.Qxe7#
      • 1...Rg8+
        • 2.hxg8Q#
        • 2.hxg8B#
      • 1...Bxc4
        • 2.Sf6#
      • 1...Qh4
        • 2.Bf6#
      • 1...Rf8
        • 2.exf8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(i);N_GUARD::QAR1(J),XP(h)
    • R(i);CHECK,OGATE::PXR(i)=Q
    • P(e);N_GUARD::P(D)
  • Tries
    • Try
      • P(H);XP(h)
      • Threat
        • QAR1(J)
      • Vars
        • R(i);CHECK,OGATE,XP(H)::QAR1(J),XR(i)
        • R(i);CHECK,OGATE::PXR(i)=Q
        • Q(a);N_GUARD::R(A)+B(G)
        • R(i);OGATE::PXR(i)=S
        • P(e);N_GUARD::P(D)
      • Refutation
        • B(g);
  • Actual
    • P(I);XP(h)
    • Threat
      • R1(E)
    • Vars
      • R(i);CHECK,OGATE,XP(I)::QAR1(J),XR(i)
      • R(i);CHECK,OGATE::PXR(i)=Q
      • B(b);N_GUARD,XP(C)::B(B)+S(F)
      • Q(a);N_GUARD::R(A)+B(G)
      • R(i);OGATE::PXR(i)=S
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Developed and maintained by Brian Stephenson.
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