MESON Chess Problem Database

Problem Display
PID: 207159 (8/8/8/8/8/QN1p4/pp1K4/1k6 w - - 0 1)

Bolotbekov, S?

Sachova skladba, 1991

8/8/8/8/8/QN1p4/pp1K4/1k6

#2

3 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Kd1?
      • 1...a1Q
        • 2.Sd2#
      • 1...a1S
        • 2.Sd2#
      • 1...a1B
        • 2.Sd2#
      • 1...a1R
        • 2.Sd2#
      • 1...d2!
    • 1.Sa1?
      • 1...bxa1Q
        • 2.Qc1#
      • 1...bxa1S
        • 2.Qc1#
      • 1...bxa1B
        • 2.Qc1#
      • 1...bxa1R
        • 2.Qc1#
        • 2.Qb4#
        • 2.Qb3#
      • 1...Kxa1!
  • Keys
    • 1.Sc1!
      • threat
        • 2.Qxa2#
      • 1...bxc1Q+
        • 2.Qxc1#
      • 1...bxc1B+
        • 2.Qxc1#
      • 1...Ka1
        • 2.Qxa2#
      • 1...bxc1S
        • 2.Qxc1#
      • 1...bxc1R
        • 2.Qxc1#
      • 1...a1Q
        • 2.Qxd3#
      • 1...a1S
        • 2.Qa2#
      • 1...a1B
        • 2.Qa2#
        • 2.Qxd3#
      • 1...a1R
        • 2.Qxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • P(b);::S(C)
      • Refutation
        • P(d);
    • Try
      • S(C);
      • Vars
        • P(c);OGATE,SBLOCK,XS(C)::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b),XS(C)
  • Actual
    • S(C);
    • Threat
      • QAB1(B),XP(b)
    • Vars
      • P(c);CHECK,OGATE,XS(C)::QAR1(B),XQ(c)
      • P(c);CHECK,OGATE,XS(C)::QAR1(B),XB(c)
      • K(a);P-FLIGHT,P_SPINP(b)::QAR1(B),XP(b)
      • P(c);OGATE,XS(C)::QAR1(B),XS(c)
      • P(c);OGATE,XS(C)::QAR1(B),XR(c)
      • P(b);SBLOCK::QAB(B),XP(d)
      • P(b);::QAB1(B)
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