MESON Chess Problem Database

Problem Display
PID: 245247 (8/8/8/8/2K5/8/kpN5/B4Q2 w - - 0 1)

Belik, Nikolai Ivanovich

Sa ogneupory, 1987

8/8/8/8/2K5/8/kpN5/B4Q2

#2

4 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...bxa1Q
      • 2.Qxa1#
    • 1...bxa1S
      • 2.Qxa1#
    • 1...bxa1B
      • 2.Qxa1#
    • 1...bxa1R
      • 2.Qxa1#
  • Tries
    • 1.Kc3?
      • 1...bxa1Q+
        • 2.Qxa1#
      • 1...bxa1B+
        • 2.Qxa1#
      • 1...bxa1S
        • 2.Qxa1#
      • 1...bxa1R
        • 2.Qxa1#
      • 1...b1Q
        • 2.Qa6#
      • 1...b1B
        • 2.Qc4#
        • 2.Qa6#
        • 2.Qf7#
      • 1...b1R
        • 2.Qa6#
      • 1...b1S+!
    • 1.Qe1?
      • 1...bxa1Q
        • 2.Qxa1#
      • 1...bxa1S
        • 2.Qxa1#
      • 1...bxa1B
        • 2.Qxa1#
      • 1...bxa1R
        • 2.Qxa1#
      • 1...b1Q
        • 2.Qa5#
      • 1...b1B
        • 2.Qa5#
      • 1...b1R
        • 2.Qa5#
      • 1...b1S!
    • 1.Qg1?
      • 1...bxa1Q
        • 2.Qxa1#
      • 1...bxa1S
        • 2.Qxa1#
      • 1...bxa1B
        • 2.Qxa1#
      • 1...bxa1R
        • 2.Qxa1#
      • 1...b1Q
        • 2.Qa7#
      • 1...b1B
        • 2.Qa7#
      • 1...b1R
        • 2.Qa7#
      • 1...b1S!
    • 1.Qh1?
      • 1...bxa1Q
        • 2.Qxa1#
      • 1...bxa1S
        • 2.Qxa1#
      • 1...bxa1B
        • 2.Qxa1#
      • 1...bxa1R
        • 2.Qxa1#
      • 1...b1Q
        • 2.Qa8#
      • 1...b1B
        • 2.Qa8#
      • 1...b1R
        • 2.Qa8#
      • 1...b1S!
  • Keys
    • 1.Qf6!
      • threat
        • 2.Qxb2#
      • 1...Kb1
        • 2.Qxb2#
      • 1...bxa1Q
        • 2.Qxa1#
      • 1...bxa1S
        • 2.Qxa1#
      • 1...bxa1B
        • 2.Qxa1#
      • 1...bxa1R
        • 2.Qxa1#
      • 1...b1Q
        • 2.Qa6#
      • 1...b1S
        • 2.Qb2#
      • 1...b1B
        • 2.Qb2#
        • 2.Qa6#
      • 1...b1R
        • 2.Qa6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(b);OGATE,XB(A)::QAR1(B),XQ(b)
    • P(b);OGATE,XB(A)::QAR1(B),XS(b)
    • P(b);OGATE,XB(A)::QAR1(B),XB(b)
    • P(b);OGATE,XB(A)::QAR1(B),XR(b)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • P(b);CHECK,OGATE,XB(A)::QAR1(B),XQ(b)
        • P(b);CHECK,OGATE,XB(A)::QAR1(B),XB(b)
        • P(b);OGATE,XB(A)::QAR1(B),XS(b)
        • P(b);OGATE,XB(A)::QAR1(B),XR(b)
        • P(b);SBLOCK::QAR(B)
      • Refutation
        • P(b);CHECK
    • Try
      • Q(B);
      • Vars
        • P(b);OGATE,XB(A)::QAR1(B),XQ(b)
        • P(b);OGATE,XB(A)::QAR1(B),XS(b)
        • P(b);OGATE,XB(A)::QAR1(B),XB(b)
        • P(b);OGATE,XB(A)::QAR1(B),XR(b)
        • P(b);SBLOCK::QAR(B)
      • Refutation
        • P(b);
    • Try
      • Q(B);
      • Vars
        • P(b);OGATE,XB(A)::QAR1(B),XQ(b)
        • P(b);OGATE,XB(A)::QAR1(B),XS(b)
        • P(b);OGATE,XB(A)::QAR1(B),XB(b)
        • P(b);OGATE,XB(A)::QAR1(B),XR(b)
        • P(b);SBLOCK::QAR(B)
      • Refutation
        • P(b);
    • Try
      • Q(B);
      • Vars
        • P(b);OGATE,XB(A)::QAR1(B),XQ(b)
        • P(b);OGATE,XB(A)::QAR1(B),XS(b)
        • P(b);OGATE,XB(A)::QAR1(B),XB(b)
        • P(b);OGATE,XB(A)::QAR1(B),XR(b)
        • P(b);SBLOCK::QAR(B)
      • Refutation
        • P(b);
  • Actual
    • Q(B);
    • Threat
      • QAR1(B),XP(b)
    • Vars
      • K(a);S_FLIGHT::QAR1(B),XP(b)
      • P(b);OGATE,XB(A)::QAR1(B),XQ(b)
      • P(b);OGATE,XB(A)::QAR1(B),XS(b)
      • P(b);OGATE,XB(A)::QAR1(B),XB(b)
      • P(b);OGATE,XB(A)::QAR1(B),XR(b)
      • P(b);SBLOCK::QAR(B)
      • P(b);::QAR1(B)
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