MESON Chess Problem Database

Problem Display
PID: 174862 (5R2/KN3nr1/4N2Q/R7/2Ppk1n1/8/4P3/2b5 w - - 0 1)

Barth, Michael

Comm., Vecherni Leningrad, 1988

5R2/KN3nr1/4N2Q/R7/2Ppk1n1/8/4P3/2b5

#2

8 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bb2
      • 2.Qf4#
    • 1...Ba3
      • 2.Qf4#
    • 1...Be3
      • 2.Qh1#
    • 1...Bf4
      • 2.Qxf4#
    • 1...Se3
      • 2.Qf4#
    • 1...Se5
      • 2.Sc5#
  • Keys
    • 1.Qh3!
      • threat
        • 2.Qd3#
        • 2.Qf3#
      • 1...Be3
        • 2.Qg2#
        • 2.Qh1#
        • 2.Qf3#
      • 1...Sf2
        • 2.Qf3#
      • 1...Sh2
        • 2.Qd3#
      • 1...Se3
        • 2.Qf3#
      • 1...Sge5
        • 2.Sbc5#
      • 1...Sfe5
        • 2.Sc5#
      • 1...Sg5
        • 2.Qd3#
      • 1...d3
        • 2.Qxd3#
        • 2.Qf3#
        • 2.exd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • B(a);N_GUARD::QAR1(E)
    • B(a);SBLOCK::QAB(E)
    • B(a);N_GUARD::QAR1(E),XB(a)
    • S(d);S_CUTB(a)::QAR1(E)
    • S(e);P_PINS(G),SBLOCK::S(D)
  • Actual
    • Q(E);
    • Threat
      • DUALS(2)
    • Vars
      • S(d);::QAB1(E)
      • S(d);SBLOCK::S(G)
      • S(e);P_PINS(G),SBLOCK::S(D)
      • S(e);P_PINS(G)::QAB1(E)
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