MESON Chess Problem Database

Problem Display
PID: 52036 (8/8/8/6N1/7Q/8/4Knk1/6bb w - - 0 1)

Bryukhanov, Ivan Oleksandrovich

Probleemblad, 2003

(First published on Sat Nov 1 2003)

8/8/8/6N1/7Q/8/4Knk1/6bb

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Bh2
      • 2.Qxf2#
    • 1...Sd1
      • 2.Qh3#
    • 1...Sd3
      • 2.Qh3#
    • 1...Sh3
      • 2.Qxh3#
    • 1...Se4
      • 2.Qh3#
    • 1...Sg4
      • 2.Qh3#
  • Tries
    • 1.Ke1?
      • 1...Bh2
        • 2.Qxf2#
      • 1...Sh3
        • 2.Qxh3#
      • 1...Sd1
        • 2.Qh3#
      • 1...Se4
        • 2.Qh3#
      • 1...Sg4
        • 2.Qh3#
      • 1...Sd3+!
  • Keys
    • 1.Sf3!
      • threat
        • 2.Se1#
      • 1...Bh2
        • 2.Qxh2#
      • 1...Sd3
        • 2.Qg4#
      • 1...Sh3
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • B(a);N_GUARD,SBLOCK::QAR1(B),XS(c)
    • S(c);N_GUARD::QAB1(B)
    • S(c);N_GUARD::QAB1(B),XS(c)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • B(a);N_GUARD,SBLOCK::QAR1(B),XS(c)
        • S(c);N_GUARD::QAB1(B),XS(c)
        • S(c);N_GUARD::QAB1(B)
      • Refutation
        • S(c);CHECK
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • B(a);N_GUARD::QAR1(B),XB(a)
      • S(c);N_GUARD::QAR2(B)
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