MESON Chess Problem Database

Problem Display
PID: 108203 (3R1Q2/3P4/2p2n2/6P1/1NNk4/1P6/1P2K3/8 w - - 0 1)

Bewitt, Charles

Matou, 1991

3R1Q2/3P4/2p2n2/6P1/1NNk4/1P6/1P2K3/8

#2

9 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Se8
      • 2.dxe8Q#
      • 2.dxe8R#
  • Tries
    • 1.Qc5+?
      • 1...Ke4
        • 2.Qe5#
      • 1...Kxc5!
    • 1.Qd6+?
      • 1...Ke4
        • 2.Qe5#
      • 1...Sd5!
    • 1.Qe7?
      • threat
        • 2.Qe3#
        • 2.Qe5#
      • 1...Se4
        • 2.Qe5#
      • 1...Sd5
        • 2.Sc2#
        • 2.Sxc6#
      • 1...Sg4!
    • 1.Qxf6+?
      • 1...Ke4
        • 2.Sd2#
        • 2.Sd6#
        • 2.Re8#
        • 2.Qe5#
      • 1...Kc5!
  • Keys
    • 1.Sd2!
      • 1...Ke5
        • 2.Qxf6#
      • 1...Sxd7
        • 2.Qd6#
      • 1...Se4
        • 2.Sf3#
      • 1...Sg4
        • 2.Qd6#
      • 1...Sd5
        • 2.Sxc6#
      • 1...Sh5
        • 2.Qd6#
      • 1...Sh7
        • 2.Qd6#
      • 1...Se8
        • 2.dxe8Q#
        • 2.dxe8R#
      • 1...Sg8
        • 2.Qd6#
      • 1...c5
        • 2.Qxf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • S(c);OGATE::PXS(c)=Q
  • Tries
    • Try
      • Q(I);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(I)
      • Refutation
        • K(a);S_FLIGHT,XQ(I)
    • Try
      • Q(I);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(I)
      • Refutation
        • S(c);P_SPINS(c)
    • Try
      • Q(I);
      • Threat
        • DUALS(2)
      • Vars
        • S(c);::QAB1(I)
      • Refutation
        • S(c);
    • Try
      • Q(I);CHECK,XS(c)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(E);
    • Vars
      • K(a);S_FLIGHT::QAB1(I),XS(c)
      • S(c);N_GUARD,P_SPINS(c),XP(G)::QAR2(I)
      • S(c);SBLOCK::S(E)
      • S(c);N_GUARD::QAR2(I)
      • S(c);SBLOCK::S(D),XP(b)
      • S(c);OGATE::PXS(c)=Q
      • P(b);SBLOCK::QAB(I),XS(c)
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