MESON Chess Problem Database

Problem Display
PID: 109458 (7q/B2B3b/3p4/1p1k4/3PN3/1P1Q4/2R5/bK6 w - - 0 1)

Strzala, Kazimierz

Wola Gulowska, 2002

7q/B2B3b/3p4/1p1k4/3PN3/1P1Q4/2R5/bK6

#2

8 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qf6
      • 2.Sxf6#
    • 1...Qa8
      • 2.Sf6#
    • 1...Qb8
      • 2.Sf6#
    • 1...Qc8
      • 2.Sf6#
    • 1...Qe8
      • 2.Sf6#
    • 1...Qg8
      • 2.Sf6#
    • 1...Bc3
      • 2.Sxc3#
    • 1...Bxe4
      • 2.Qxb5#
  • Tries
    • 1.Kxa1?
      • threat
        • 2.Sc3#
      • 1...Qxd4+
        • 2.Qxd4#
      • 1...Bxe4
        • 2.Qxb5#
      • 1...Qc8
        • 2.Sf6#
      • 1...b4!
  • Keys
    • 1.Re2!
      • threat
        • 2.Qxb5#
      • 1...Qxd4
        • 2.Sf6#
      • 1...Bxd4
        • 2.Sc3#
      • 1...Bxe4
        • 2.Qxe4#
      • 1...Qb8
        • 2.Sf6#
      • 1...Qc8
        • 2.Sf6#
      • 1...b4
        • 2.Qc4#
        • 2.Qb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • Q(f);N_GUARD::S(F),XQ(f)
    • Q(f);N_GUARD::S(F)
    • B(a);N_GUARD::S(F),XB(a)
    • B(e);SBLOCK,XS(F)::QAR2(D),XP(b)
  • Tries
    • Try
      • K(A);P-FLIGHT,P_SPINP(E),XB(a)
      • Threat
        • S(F)
      • Vars
        • Q(f);CHECK,OGATE,P_SPINQ(f),XP(E)::QAR1(D),XQ(f)
        • B(e);SBLOCK,XS(F)::QAR2(D),XP(b)
        • Q(f);N_GUARD,N_PINP(E)::S(F)
      • Refutation
        • P(b);
  • Actual
    • R(B);
    • Threat
      • QAR2(D),XP(b)
    • Vars
      • Q(f);N_GUARD,P_SPINQ(f),XP(E)::S(F)
      • B(a);N_GUARD,P_SPINB(a),XP(E)::S(F)
      • B(e);OGATE,P_PINQ(D),XS(F)::QAB1(D),XB(e)
      • Q(f);N_GUARD::S(F)
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