MESON Chess Problem Database

Problem Display
PID: 71595 (8/8/p1KN3n/4N1Q1/2PkP3/8/1Prpp2B/1BRq4 w - - 0 1)

Millour, Rene-Jean

3rd Prize, Probleme TT, 1966

8/8/p1KN3n/4N1Q1/2PkP3/8/1Prpp2B/1BRq4

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qg1
      • 2.Bxg1#
      • 2.Qxg1#
    • 1...Rxc1
      • 2.Sf3#
    • 1...Rxb2
      • 2.Sf3#
    • 1...Rc3
      • 2.bxc3#
    • 1...Rxc4+
      • 2.Rxc4#
    • 1...e1S
      • 2.Bg1#
      • 2.Qg1#
  • Tries
    • 1.Sb5+?
      • 1...Kxe4
        • 2.Qf4#
      • 1...axb5!
    • 1.Sf5+?
      • 1...Kxe4
        • 2.Qf4#
      • 1...Sxf5!
    • 1.Qg7?
      • threat
        • 2.Qa7#
      • 1...Rxc4+
        • 2.Sexc4#
      • 1...Ke3
        • 2.Qa7#
      • 1...Rxb2
        • 2.Sg4#
      • 1...Sf7!
  • Keys
    • 1.Qd8!
      • threat
        • 2.Qb6#
      • 1...Rxc4+
        • 2.Sdxc4#
      • 1...Ke3
        • 2.Qb6#
      • 1...Rxb2
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(b);XR(B)::S(G)
    • R(b);N_PINP(E),XP(C)::S(G)
    • R(b);OGATE::P(C),XR(b)
    • R(b);CHECK,OGATE,XP(E)::R1(B),XR(b)
  • Tries
    • Try
      • S(J);CHECK
      • Vars
        • K(e);P-FLIGHT,P_SPINR(b),XP(F)::QAR1(H)
      • Refutation
        • P(f);XS(J)
    • Try
      • S(J);CHECK
      • Vars
        • K(e);P-FLIGHT,P_SPINR(b),XP(F)::QAR1(H)
      • Refutation
        • S(g);XS(J)
    • Try
      • Q(H);
      • Threat
        • QAB(H)
      • Vars
        • R(b);CHECK,XP(E)::QAB(H)+S(G),XR(b)
        • K(e);S_FLIGHT::QAB(H)
        • R(b);N_PINP(E),XP(C)::QAB(H)+S(G)
      • Refutation
        • S(g);
  • Actual
    • Q(H);
    • Threat
      • QAB(H)
    • Vars
      • R(b);CHECK,XP(E)::QAR(H)+S(J),XR(b)
      • K(e);S_FLIGHT::QAB(H)
      • R(b);N_PINP(E),XP(C)::QAR(H)+S(J),DCHECK
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