MESON Chess Problem Database

Problem Display
PID: 195030 (q4rQ1/4N3/4p1b1/4pp2/4k3/3R3P/2B5/2B4K w - - 0 1)

Berkel, Adrian V

Brisbane Courier, 1918

q4rQ1/4N3/4p1b1/4pp2/4k3/3R3P/2B5/2B4K

#2

7 + 7

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rf6
      • 2.Qxa8#
    • 1...Rf7
      • 2.Qxa8#
    • 1...Bf7
      • 2.Qg2#
    • 1...Bh7
      • 2.Qg2#
    • 1...Be8
      • 2.Qg2#
  • Keys
    • 1.Sxf5!
      • threat
        • 2.Sg3#
        • 2.Sd6#
      • 1...Kxf5+
        • 2.Rf3#
      • 1...Rxf5
        • 2.Qxa8#
      • 1...Bxf5
        • 2.Qg2#
      • 1...exf5
        • 2.Qc4#
      • 1...Qd5
        • 2.Sg3#
      • 1...Qc6
        • 2.Sg3#
      • 1...Qa3
        • 2.Sg3#
      • 1...Qa6
        • 2.Sg3#
      • 1...Qb8
        • 2.Sg3#
      • 1...Qd8
        • 2.Sg3#
      • 1...Rd8
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 5
  • Sets
    • R(g);OGATE::QAB(G),XQ(f)
    • B(e);OGATE::QAB(G)
  • Actual
    • S(F);XP(c)
    • Threat
      • DUALS(2)
    • Vars
      • K(a);CHECK,S_FLIGHT,XS(F)::B(C)+R(D),DCHECK
      • R(g);OGATE,SBLOCK,XS(F)::QAB(G),XQ(f)
      • B(e);OGATE,SBLOCK,XS(F)::QAB(G)
      • P(d);OGATE,SBLOCK,XS(F)::QAR2(G)
      • Q(f);::S(F)
      • R(g);::S(F)
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