MESON Chess Problem Database

Problem Display
PID: 189412 (8/p5n1/2K5/2p5/1P1kNB2/PrR5/q1rp4/1b1n1B1Q w - - 0 1)

Shire, David J

British Chess Magazine, 2019

8/p5n1/2K5/2p5/1P1kNB2/PrR5/q1rp4/1b1n1B1Q

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rcb2
      • 2.Rc4#
  • Tries
    • 1.Sd6?
      • threat
        • 2.Sb5#
      • 1...Kxc3
        • 2.Be5#
      • 1...Rxb4
        • 2.Rd3#
      • 1...Sxc3
        • 2.Qg1#
      • 1...a6!
    • 1.Rd3+?
      • 1...Kc4
        • 2.Sd6#
      • 1...Rxd3!
  • Keys
    • 1.Sg3!
      • threat
        • 2.Se2#
      • 1...Kxc3
        • 2.Be5#
      • 1...Rcxc3
        • 2.Qd5#
      • 1...Rbxc3
        • 2.Qe4#
      • 1...Sxc3
        • 2.Qg1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(d);N_GUARD::R1(D)
  • Tries
    • Try
      • S(F);
      • Threat
        • S(F)
      • Vars
        • K(g);S_FLIGHT,XR(D)::B(G)
        • R(f);N_GUARD,XP(E)::R1(D)
        • S(b);N_GUARD,SBLOCK,XR(D)::QAB(B)
      • Refutation
        • P(i);
    • Try
      • R(D);CHECK
      • Vars
        • K(g);P-FLIGHT::S(F)
      • Refutation
        • R(f);XR(D)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • K(g);S_FLIGHT,XR(D)::B(G)
      • R(d);SBLOCK,XR(D)::QAR1(B)
      • R(f);SBLOCK,XR(D)::QAR1(B)
      • S(b);N_GUARD,SBLOCK,XR(D)::QAB(B)
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