MESON Chess Problem Database

Problem Display
PID: 185368 (k1K5/1p6/1p2P3/8/1p6/N3Q3/R3q3/8 w - - 0 1)

Mirand, Georges

diagrammes, 1974

k1K5/1p6/1p2P3/8/1p6/N3Q3/R3q3/8

#2

5 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Ka7
      • 2.Sb5#
    • 1...Qd1
      • 2.Sc2#
    • 1...Qf1
      • 2.Sc4#
      • 2.Sb5#
    • 1...Qf3
      • 2.Sb1#
      • 2.Sc2#
      • 2.Sc4#
      • 2.Sb5#
    • 1...Qc4+
      • 2.Sxc4#
    • 1...Qg4
      • 2.Sb1#
      • 2.Sc2#
      • 2.Sc4#
      • 2.Sb5#
    • 1...Qb5
      • 2.Sxb5#
    • 1...Qh5
      • 2.Sb5#
    • 1...Qe1
      • 2.Sb1#
      • 2.Sc2#
      • 2.Sc4#
      • 2.Sb5#
    • 1...Qc2+
      • 2.Sxc2#
    • 1...Qd2
      • 2.Sc2#
    • 1...Qf2
      • 2.Sc2#
    • 1...Qg2
      • 2.Sc2#
    • 1...Qh2
      • 2.Sc2#
    • 1...b5
      • 2.Sc2#
  • Tries
    • 1.Qf4?
      • threat
        • 2.Qb8#
      • 1...Qc4+
        • 2.Sxc4#
      • 1...Qc2+
        • 2.Sxc2#
      • 1...Ka7
        • 2.Sb5#
      • 1...Qh2
        • 2.Sc2#
      • 1...Qe5
        • 2.Sb5#
      • 1...Qxe6+!
    • 1.Qxe2?
      • threat
        • 2.Sb1#
        • 2.Sc2#
        • 2.Sc4#
        • 2.Sb5#
      • 1...Ka7
        • 2.Sb1#
        • 2.Sc2#
        • 2.Sc4#
        • 2.Sb5#
      • 1...bxa3
        • 2.Rxa3#
      • 1...b5
        • 2.Sb1#
        • 2.Sc2#
        • 2.Sc4#
        • 2.Sxb5#
      • 1...b3!
    • 1.Qg3?
      • threat
        • 2.Qb8#
      • 1...Qc4+
        • 2.Sxc4#
      • 1...Qc2+
        • 2.Sxc2#
      • 1...Ka7
        • 2.Sb5#
      • 1...Qh2
        • 2.Sc2#
      • 1...Qe5
        • 2.Sb5#
      • 1...Qxe6+!
  • Keys
    • 1.Qe5!
      • threat
        • 2.Qb8#
      • 1...Qc4+
        • 2.Sxc4#
      • 1...Qc2+
        • 2.Sxc2#
      • 1...Ka7
        • 2.Sb5#
      • 1...Qxe5
        • 2.Sb5#
      • 1...Qh2
        • 2.Sc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • K(e);P-FLIGHT,P_SPINP(c)::R(A)+S(B),DCHECK
    • Q(a);N_GUARD::R(A)+S(B)
    • Q(a);CHECK,N_GUARD::R(A)+S(B),XQ(a)
    • Q(a);N_GUARD::R(A)+S(B),XQ(a)
    • P(c);S_CUTQ(a)::R(A)+S(B)
  • Tries
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • Q(a);CHECK,N_GUARD::R(A)+S(B),XQ(a)
        • K(e);P-FLIGHT::R(A)+S(B),DCHECK
        • Q(a);N_GUARD::R(A)+S(B)
      • Refutation
        • Q(a);CHECK,XP(D)
    • Try
      • Q(C);XQ(a)
      • Threat
        • DUALS(4)
      • Vars
        • P(b);OGATE,P_SPINP(b),XS(B)::R(A),XP(b)
      • Refutation
        • P(b);
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • Q(a);CHECK,N_GUARD::R(A)+S(B),XQ(a)
        • K(e);P-FLIGHT::R(A)+S(B),DCHECK
        • Q(a);N_GUARD::R(A)+S(B)
      • Refutation
        • Q(a);CHECK,XP(D)
  • Actual
    • Q(C);
    • Threat
      • QAR1(C)
    • Vars
      • Q(a);CHECK,N_GUARD::R(A)+S(B),XQ(a)
      • K(e);P-FLIGHT::R(A)+S(B),DCHECK
      • Q(a);N_GUARD,XQ(C)::R(A)+S(B)
      • Q(a);N_GUARD::R(A)+S(B)
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