MESON Chess Problem Database

Problem Display
PID: 102396 (6B1/5r1r/qn4R1/Rb1k1N2/3P4/8/n1N1Q2b/5K2 w - - 0 1)

Duquesnoy, Patrice

Europe Echecs, 1989

6B1/5r1r/qn4R1/Rb1k1N2/3P4/8/n1N1Q2b/5K2

#2

8 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qb7
      • 2.Rxb5#
    • 1...Qa7
      • 2.Rxb5#
    • 1...Qa8
      • 2.Rxb5#
    • 1...Rh3
      • 2.Bxf7#
    • 1...Rh4
      • 2.Bxf7#
    • 1...Rh5
      • 2.Bxf7#
    • 1...Rh6
      • 2.Bxf7#
    • 1...Rh8
      • 2.Bxf7#
    • 1...Bg1
      • 2.Rd6#
    • 1...Bf4
      • 2.Se7#
    • 1...Bd6
      • 2.Rxd6#
    • 1...Sc1
      • 2.Sb4#
    • 1...Sc3
      • 2.Sb4#
    • 1...Sb4
      • 2.Sxb4#
    • 1...Sc4
      • 2.Qf3#
      • 2.Qg2#
  • Tries
    • 1.Kg2?
      • threat
        • 2.Se7#
        • 2.Qe6#
      • 1...Bd6
        • 2.Rxd6#
      • 1...Qb7
        • 2.Rxb5#
        • 2.Qe6#
      • 1...Qc8
        • 2.Se7#
      • 1...Qa7
        • 2.Rxb5#
        • 2.Qe6#
      • 1...Be5
        • 2.Se7#
      • 1...Sa4
        • 2.Se7#
      • 1...Sc4
        • 2.Se7#
        • 2.Qf3#
      • 1...Sd7
        • 2.Se7#
      • 1...Sa8
        • 2.Se7#
      • 1...Sc8!
    • 1.Rf6?
      • threat
        • 2.Se7#
      • 1...Bd6
        • 2.Rxd6#
      • 1...Qb7
        • 2.Rxb5#
      • 1...Qa7
        • 2.Rxb5#
      • 1...Sc8!
  • Keys
    • 1.Qd3!
      • threat
        • 2.Se3#
      • 1...Bd6
        • 2.Rxd6#
      • 1...Rh3
        • 2.Bxf7#
      • 1...Bg1
        • 2.Rd6#
      • 1...Bf4
        • 2.Se7#
      • 1...Sc4
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 10
  • Sets
    • Q(e);N_GUARD::R(E),XB(c)
    • R(h);N_GUARD::B(H),XR(g)
    • B(b);N_GUARD::R1(G)
    • B(b);N_PINS(F)::S(F)
    • B(b);N_GUARD::R1(G),XB(b)
    • S(a);N_GUARD::S(B)
    • S(a);N_GUARD::S(B),XS(a)
  • Tries
    • Try
      • K(A);N_SPINQ(C),N_SPINS(F),S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • B(b);N_GUARD::R1(G),XB(b)
        • Q(e);::S(F)
        • B(b);::S(F)
        • S(f);::S(F)
      • Refutation
        • S(f);
    • Try
      • R(G);N_SPINS(F)
      • Threat
        • S(F)
      • Vars
        • B(b);N_GUARD::R1(G),XB(b)
        • Q(e);N_GUARD::R(E),XB(c)
      • Refutation
        • S(f);
  • Actual
    • Q(C);
    • Threat
      • S(B)
    • Vars
      • B(b);N_GUARD::R1(G),XB(b)
      • R(h);N_GUARD::B(H),XR(g)
      • B(b);N_GUARD::R1(G)
      • B(b);N_PINS(F)::S(F)
      • S(f);N_PINQ(C),SBLOCK::QAB(C)
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