MESON Chess Problem Database

Problem Display
PID: 243416 (5Kb1/5n2/1P4p1/QR4P1/nN3kpB/b1p1R3/3Pp3/4q3 w - - 0 1)

Beale, John Lindsay

Chess World (The), 1946

5Kb1/5n2/1P4p1/QR4P1/nN3kpB/b1p1R3/3Pp3/4q3

#2

9 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qg3
      • 2.Bxg3#
    • 1...Qa1
      • 2.Bg3#
    • 1...Qb1
      • 2.Bg3#
    • 1...Qc1
      • 2.Bg3#
    • 1...Qd1
      • 2.Bg3#
    • 1...Qf1
      • 2.Bg3#
    • 1...Qh1
      • 2.Bg3#
    • 1...Bc1
      • 2.Sd3#
    • 1...Bb2
      • 2.Sd3#
    • 1...Bxb4+
      • 2.Rxb4#
      • 2.Qxb4#
    • 1...Sxg5
      • 2.Bxg5#
    • 1...Sd6
      • 2.Sd3#
  • Keys
    • 1.Rbe5!
      • threat
        • 2.R5e4#
      • 1...Bxb4+
        • 2.Qxb4#
      • 1...Sxe5
        • 2.Qxe5#
      • 1...Sxg5
        • 2.Bxg5#
      • 1...Qb1
        • 2.Bg3#
      • 1...Qh1
        • 2.Bg3#
      • 1...Sc5
        • 2.Sd5#
      • 1...Sd6
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • Q(a);N_GUARD::B(D),XQ(a)
    • Q(a);N_GUARD::B(D)
    • B(c);N_PINS(C)::S(C)
    • S(i);OGATE,XP(G)::B(D),XS(i)
    • S(i);N_PINS(C)::S(C)
  • Actual
    • R(F);
    • Threat
      • R1(F)
    • Vars
      • B(c);CHECK,OGATE,XS(C)::QAR(E),XB(c)
      • S(i);OGATE,XR(F)::QAB1(E),XS(i)
      • S(i);OGATE,XP(G)::B(D),XS(i)
      • Q(a);N_GUARD::B(D)
      • S(e);N_PINS(C)::S(C)
      • S(i);N_PINS(C)::S(C)
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