MESON Chess Problem Database

Problem Display
PID: 268577 (8/8/B7/BRR4K/p1N5/rp3N2/ppkp4/nbb5 w - - 0 1)

Ouellet, Charles

Probleemblad, 1986

8/8/B7/BRR4K/p1N5/rp3N2/ppkp4/nbb5

#2

7 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...d1Q
      • 2.Se5#
    • 1...d1S
      • 2.Se1#
    • 1...d1B
      • 2.Se5#
    • 1...d1R
      • 2.Sce5#
  • Tries
    • 1.Scxd2+?
      • 1...Kd3
        • 2.Rxb3#
      • 1...Kd1!
    • 1.Sd6+?
      • 1...Kd3
        • 2.Rxb3#
      • 1...Kd1!
    • 1.Rb4?
      • threat
        • 2.Se3#
      • 1...Kd1
        • 2.Se3#
      • 1...Kc3
        • 2.Scxd2#
        • 2.Sxa3#
        • 2.Se3#
        • 2.Sce5#
        • 2.Sb6#
        • 2.Sd6#
      • 1...Kd3!
    • 1.Rb6?
      • threat
        • 2.Se3#
      • 1...Kd1
        • 2.Se3#
      • 1...Kd3!
    • 1.Rb7?
      • threat
        • 2.Se3#
      • 1...Kd1
        • 2.Se3#
      • 1...Kd3!
    • 1.Rb8?
      • threat
        • 2.Se3#
      • 1...Kd1
        • 2.Se3#
      • 1...Kd3!
    • 1.Rd5?
      • threat
        • 2.Se3#
      • 1...d1Q
        • 2.Sxa3#
      • 1...d1S
        • 2.Se1#
        • 2.Sxa3#
      • 1...d1B
        • 2.Sxa3#
      • 1...d1R
        • 2.Sxa3#
      • 1...Kd1!
  • Keys
    • 1.Rxb3!
      • 1...Kd1
        • 2.Se3#
      • 1...Kxb3
        • 2.Sd4#
      • 1...Rxb3
        • 2.Se3#
      • 1...Sxb3
        • 2.Se3#
      • 1...axb3
        • 2.Se3#
      • 1...d1Q
        • 2.Sd2#
      • 1...d1S
        • 2.Sd4#
      • 1...d1B
        • 2.Sd2#
      • 1...d1R
        • 2.Scd2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 4
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • P(g);P_PINS(A),SBLOCK::R(E)+S(B)
    • P(g);N_GUARD,SBLOCK::S(A)
    • P(g);SBLOCK::R(E)+S(B)
  • Tries
    • Try
      • S(B);CHECK,XP(g)
      • Vars
        • K(f);N_GUARD,S_FLIGHT::B(G)+R(D),DCHECK,XP(i)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • S(B);CHECK
      • Vars
        • K(f);N_GUARD,S_FLIGHT::B(G)+R(D),DCHECK,XP(i)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • R(D);
      • Threat
        • R(E)+S(B),DCHECK
      • Vars
        • K(f);S_FLIGHT::S(B)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • R(D);
      • Threat
        • R(E)+S(B),DCHECK
      • Vars
        • K(f);S_FLIGHT::S(B)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • R(D);
      • Threat
        • R(E)+S(B),DCHECK
      • Vars
        • K(f);S_FLIGHT::S(B)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • R(D);
      • Threat
        • R(E)+S(B),DCHECK
      • Vars
        • K(f);S_FLIGHT::S(B)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • R(E);
      • Threat
        • S(B)
      • Vars
        • P(g);P_PINS(A)::S(B),XR(h)
        • P(g);::S(B),XR(h)
      • Refutation
        • K(f);P_SPINP(g),S_FLIGHT
  • Actual
    • R(D);XP(i)
    • Vars
      • K(f);N_GUARD,S_FLIGHT::S(B)
      • K(f);N_GUARD,S_FLIGHT,XR(D)::S(A)
      • R(h);SBLOCK,XR(D)::R(E)+S(B),DCHECK
      • S(a);SBLOCK,XR(D)::R(E)+S(B),DCHECK
      • P(j);SBLOCK,XR(D)::R(E)+S(B),DCHECK
      • P(g);P_PINS(A),SBLOCK::R(E)+S(B)
      • P(g);SBLOCK::S(A)
      • P(g);SBLOCK::R(E)+S(B)
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