MESON Chess Problem Database

Problem Display
PID: 117866 (3R2B1/2p1B1p1/1prn2P1/1P2p1pR/2pk4/2p1p2N/2P1QN2/3K4 w - - 0 1)

Ouellet, Charles

Chess Life & Review, 1990

3R2B1/2p1B1p1/1prn2P1/1P2p1pR/2pk4/2p1p2N/2P1QN2/3K4

#2

11 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qxc4#
  • Tries
    • 1.Sg4?
      • threat
        • 2.Qxe3#
      • 1...Kc5
        • 2.Qxc4#
      • 1...Ke4!
    • 1.Bxg5?
      • threat
        • 2.Bxe3#
        • 2.Qxe3#
      • 1...exf2
        • 2.Qe3#
      • 1...e4
        • 2.Bxe3#
      • 1...Kc5!
    • 1.Rxg5?
      • 1...Kc5
        • 2.Qxc4#
      • 1...exf2
        • 2.Qxe5#
      • 1...e4
        • 2.Rd5#
      • 1...Rc5!
    • 1.Rxd6+?
      • 1...Kc5
        • 2.Rd5#
        • 2.Qxc4#
      • 1...Rxd6
        • 2.Qxc4#
      • 1...cxd6!
    • 1.Qd3+?
      • 1...Kc5
        • 2.Qxc4#
      • 1...cxd3!
    • 1.Qg4+?
      • 1...Kc5
        • 2.Qxc4#
      • 1...e4!
  • Keys
    • 1.Sxg5!
      • 1...Kc5
        • 2.Qxc4#
      • 1...exf2
        • 2.Qxf2#
      • 1...e4
        • 2.Se6#
      • 1...Rc5
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(d);S_FLIGHT::QAR1(C),XP(c)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAB1(C),XP(b)
      • Vars
        • K(d);S_FLIGHT::QAR1(C),XP(c)
      • Refutation
        • K(d);N_SPINS(i),P-FLIGHT,P_SPINP(b)
    • Try
      • B(I);XP(f)
      • Threat
        • DUALS(2)
      • Vars
        • P(b);XS(D)::QAB1(C)
        • P(e);::B(I),XP(b)
      • Refutation
        • K(d);N_SPINS(i),S_FLIGHT
    • Try
      • R(G);XP(f)
      • Vars
        • K(d);P_SPINP(e),S_FLIGHT::QAR1(C),XP(c)
        • P(b);OGATE,XS(D)::QAB1(C),XP(e)
        • P(e);OGATE::R1(G)
      • Refutation
        • R(h);
    • Try
      • R(J);CHECK,XS(i)
      • Vars
        • R(h);XR(J)::QAR1(C),XP(c)
      • Refutation
        • P(j);XR(J)
    • Try
      • Q(C);CHECK
      • Vars
        • K(d);S_FLIGHT::QAR1(C),XP(c)
      • Refutation
        • P(c);XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • K(d);OGATE,S_FLIGHT::QAR1(C),XP(c)
      • Refutation
        • P(e);P_SPINP(e)
  • Actual
    • S(E);XP(f)
    • Vars
      • K(d);S_FLIGHT::QAR1(C),XP(c)
      • P(b);OGATE,XS(D)::QAB(C),XP(b)
      • P(e);::S(E)
      • R(h);SBLOCK::S(E)
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