MESON Chess Problem Database

Problem Display
PID: 10932 (1rQR4/1N2NKn1/1RB5/B7/2k1p3/p3rp2/4pb2/8 w - - 0 1)

Morice, Jean

3rd Prize, Themes-64, 1969

1rQR4/1N2NKn1/1RB5/B7/2k1p3/p3rp2/4pb2/8

#2

8 + 9

5395 Schach fur Nussknacker 1994
102 Probleemblad 2002
702 Phenix 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rb3
      • 2.Bb5#
    • 1...Rc3
      • 2.Rb4#
    • 1...Rxb7
      • 2.Bxb7#
    • 1...Sf5
      • 2.Qe6#
    • 1...Sh5
      • 2.Qe6#
    • 1...Se6
      • 2.Qxe6#
    • 1...Se8
      • 2.Qe6#
  • Tries
    • 1.Sg6?
      • threat
        • 2.Se5#
      • 1...Rxb7+
        • 2.Bxb7#
      • 1...Bg3!
    • 1.Bd2?
      • threat
        • 2.Rb4#
      • 1...Rxb7
        • 2.Bxb7#
      • 1...Rb3
        • 2.Bb5#
      • 1...Rc3!
    • 1.Bd5+?
      • 1...Kd3
        • 2.Ba2#
        • 2.Bb3#
        • 2.Be6#
        • 2.Qc3#
        • 2.Qc4#
      • 1...Kd4!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Rd4#
      • 1...Rxb7+
        • 2.Bxb7#
      • 1...Sxf5
        • 2.Qe6#
      • 1...Rb3
        • 2.Bb5#
      • 1...Rc3
        • 2.Rb4#
      • 1...Rd3
        • 2.Bd5#
      • 1...Se6
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(d);SBLOCK::QAR(G)+B(C),DCHECK
    • R(d);SBLOCK::R1(B)
    • R(i);OGATE,P_PINS(E),XS(D)::QAR(G)+B(C),XR(i)
    • S(h);N_GUARD::QAB(G)
    • S(h);N_GUARD::QAB(G),XS(h)
  • Tries
    • Try
      • S(E);
      • Threat
        • S(E)
      • Vars
        • R(i);CHECK,OGATE,XS(D)::QAR(G)+B(C),XR(i)
      • Refutation
        • B(b);
    • Try
      • B(A);
      • Threat
        • R1(B)
      • Vars
        • R(i);OGATE,P_PINS(E),XS(D)::QAR(G)+B(C),XR(i)
        • R(d);SBLOCK::QAR(G)+B(C),DCHECK
      • Refutation
        • R(d);
    • Try
      • B(C);CHECK
      • Refutation
        • K(f);P-FLIGHT
  • Actual
    • S(E);
    • Threat
      • R1(H)
    • Vars
      • R(i);CHECK,OGATE,XS(D)::QAR(G)+B(C),XR(i)
      • S(h);N_GUARD,XS(E)::QAB(G)
      • R(d);SBLOCK::QAR(G)+B(C),DCHECK
      • R(d);SBLOCK::R1(B)
      • S(h);N_GUARD::QAB(G),XS(h)
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