MESON Chess Problem Database

Problem Display
PID: 95170 (8/8/8/8/3K4/Q2n4/NB6/1k6 w - - 0 1)

Belik, Nikolai Ivanovich

Cherkasskaya Pravda, 1990

8/8/8/8/3K4/Q2n4/NB6/1k6

#2

4 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Bc1?
      • 1...Ka1
        • 2.Sc3#
      • 1...Kc2
        • 2.Qxd3#
      • 1...Se1
        • 2.Qb2#
      • 1...Sb2
        • 2.Qxb2#
      • 1...Sf2
        • 2.Qb2#
      • 1...Sb4
        • 2.Qb2#
      • 1...Sf4
        • 2.Qb2#
      • 1...Sc5
        • 2.Qb2#
      • 1...Se5
        • 2.Qb2#
      • 1...Sxc1!
    • 1.Bc3?
      • 1...Sb2
        • 2.Qxb2#
      • 1...Sc1
        • 2.Qb2#
      • 1...Se1
        • 2.Qb2#
        • 2.Qb3#
      • 1...Sf2
        • 2.Qb2#
        • 2.Qb3#
      • 1...Sb4
        • 2.Qb2#
        • 2.Qb3#
      • 1...Sf4
        • 2.Qb2#
        • 2.Qb3#
      • 1...Sc5
        • 2.Qb2#
      • 1...Se5
        • 2.Qb2#
        • 2.Qb3#
      • 1...Kc2!
  • Keys
    • 1.Ba1!
      • 1...Kxa1
        • 2.Sc3#
      • 1...Kc2
        • 2.Qxd3#
      • 1...Sc1
        • 2.Qb2#
      • 1...Se1
        • 2.Qb2#
      • 1...Sb2
        • 2.Qxb2#
      • 1...Sf2
        • 2.Qb2#
      • 1...Sb4
        • 2.Qb2#
      • 1...Sf4
        • 2.Qb2#
      • 1...Sc5
        • 2.Qb2#
      • 1...Se5
        • 2.Qb2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(B);
      • Vars
        • K(a);P-FLIGHT::QAR(C)+S(A)
        • K(a);S_FLIGHT::QAB1(C),XS(b)
        • S(b);N_GUARD::QAR1(C)
        • S(b);N_GUARD::QAR1(C),XS(b)
      • Refutation
        • S(b);XB(B)
    • Try
      • B(B);
      • Vars
        • S(b);N_GUARD::QAR1(C),XS(b)
        • S(b);N_GUARD::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • B(B);
    • Vars
      • K(a);P-FLIGHT,XB(B)::QAR(C)+S(A)
      • K(a);S_FLIGHT::QAB1(C),XS(b)
      • S(b);N_GUARD::QAR1(C)
      • S(b);N_GUARD::QAR1(C),XS(b)
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