MESON Chess Problem Database

Problem Display
PID: 256818 (n7/n2R3K/1pkN4/r4Q2/1P1p1p1p/5r1B/2q5/1bR5 w - - 0 1)

Haring, WH

Probleemblad, 1947

n7/n2R3K/1pkN4/r4Q2/1P1p1p1p/5r1B/2q5/1bR5

#2

7 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Qe4#
    • 1...Ra2
      • 2.Qe4#
    • 1...Ra3
      • 2.Qe4#
    • 1...Ra4
      • 2.Qe4#
    • 1...Ra6
      • 2.Qe4#
    • 1...Sb5
      • 2.Qe4#
  • Keys
    • 1.Sb5!
      • threat
        • 2.Sxd4#
      • 1...Rxb5
        • 2.Qg6#
      • 1...Sxb5
        • 2.Qe4#
      • 1...Sc7
        • 2.Rxc7#
      • 1...Rd3
        • 2.Qd5#
      • 1...d3
        • 2.Sd4#
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(g);N_GUARD::QAB(D)
    • S(j);S_CUTR(g)::QAB(D)
  • Actual
    • S(E);
    • Threat
      • S(E),XP(d)
    • Vars
      • R(g);SBLOCK,XS(E)::QAR(D)
      • S(j);SBLOCK,XS(E)::QAB(D)
      • S(k);N_GUARD::R1(F),XS(k)
      • R(c);N_PINQ(D)::QAB1(D)
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