MESON Chess Problem Database

Problem Display
PID: 163666 (8/8/8/8/7N/3QK3/6PP/6kq w - - 0 1)

Pustovoi, Boris

Novi Temi, 1973

8/8/8/8/7N/3QK3/6PP/6kq

#2

5 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Qxh2
      • 2.Qb1#
      • 2.Qd1#
  • Tries
    • 1.Qc2?
      • 1...Kf1
        • 2.Qb1#
        • 2.Qd1#
        • 2.Qc1#
        • 2.Qf2#
      • 1...Qxg2
        • 2.Qxg2#
      • 1...Qxh2
        • 2.Qb1#
        • 2.Qd1#
        • 2.Qc1#
      • 1...Kxh2!
    • 1.Qe2?
      • threat
        • 2.Sf3#
      • 1...Qxg2
        • 2.Qxg2#
      • 1...Qxh2
        • 2.Qd1#
        • 2.Qe1#
      • 1...Kxh2!
    • 1.Qe4?
      • 1...Kf1
        • 2.Qb1#
      • 1...Qxg2
        • 2.Qxg2#
      • 1...Qxh2
        • 2.Qb1#
      • 1...Kxh2!
    • 1.Qd2?
      • 1...Kf1
        • 2.Qc1#
        • 2.Qd1#
        • 2.Qf2#
      • 1...Qxg2
        • 2.Qxg2#
      • 1...Qxh2
        • 2.Qc1#
        • 2.Qe1#
        • 2.Qd1#
      • 1...Kxh2!
    • 1.Qd5?
      • 1...Kf1
        • 2.Qd1#
      • 1...Qxg2
        • 2.Qxg2#
      • 1...Qxh2
        • 2.Qd1#
      • 1...Kxh2!
    • 1.Qd6?
      • 1...Kf1
        • 2.Qd1#
      • 1...Qxh2
        • 2.Qd1#
      • 1...Qxg2!
  • Keys
    • 1.Qg6!
      • 1...Kf1
        • 2.Qb1#
      • 1...Kxh2
        • 2.Sf3#
      • 1...Qxg2
        • 2.Qxg2#
      • 1...Qxh2
        • 2.Qb1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);
      • Vars
        • Q(b);OGATE,XP(A)::QAR1(C),XQ(b)
      • Refutation
        • K(a);S_FLIGHT,XP(B)
    • Try
      • Q(C);
      • Threat
        • S(E)
      • Vars
        • Q(b);OGATE,XP(A)::QAR1(C),XQ(b)
      • Refutation
        • K(a);S_FLIGHT,XP(B)
    • Try
      • Q(C);
      • Vars
        • K(a);P-FLIGHT::QAR(C)
        • Q(b);OGATE,XP(A)::QAR1(C),XQ(b)
        • Q(b);SBLOCK,XP(B)::QAR(C)
      • Refutation
        • K(a);S_FLIGHT,XP(B)
    • Try
      • Q(C);
      • Vars
        • Q(b);OGATE,XP(A)::QAR1(C),XQ(b)
      • Refutation
        • K(a);S_FLIGHT,XP(B)
    • Try
      • Q(C);
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
        • Q(b);OGATE,XP(A)::QAR1(C),XQ(b)
        • Q(b);SBLOCK,XP(B)::QAR(C)
      • Refutation
        • K(a);S_FLIGHT,XP(B)
    • Try
      • Q(C);
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
        • Q(b);SBLOCK,XP(B)::QAR(C)
      • Refutation
        • Q(b);XP(A)
  • Actual
    • Q(C);
    • Vars
      • K(a);P-FLIGHT::QAR(C)
      • K(a);S_FLIGHT,XP(B)::S(E)
      • Q(b);OGATE,P_SPINQ(b),XP(A)::QAR1(C),XQ(b)
      • Q(b);SBLOCK,XP(B)::QAR(C)
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