MESON Chess Problem Database

Problem Display
PID: 185169 (B3N3/R1p3N1/2r2p2/2b1k2n/bpQ4B/2P5/8/5K2 w - - 0 1)

Greenwood, William M

British Chess Magazine, 1917

B3N3/R1p3N1/2r2p2/2b1k2n/bpQ4B/2P5/8/5K2

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Ra6
      • 2.Qe4#
    • 1...Rb6
      • 2.Qe4#
    • 1...Rd6
      • 2.Qe4#
    • 1...Re6
      • 2.Qe4#
    • 1...Bd4
      • 2.Qxd4#
    • 1...Bd6
      • 2.Qd4#
    • 1...Be7
      • 2.Qd4#
    • 1...Bf8
      • 2.Qd4#
    • 1...Sg3+
      • 2.Bxg3#
  • Tries
    • 1.Bg3+?
      • 1...Sf4
        • 2.Bxf4#
      • 1...Sxg3+!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Sf7#
      • 1...Sg3+
        • 2.Bxg3#
      • 1...Kxd6
        • 2.Qe6#
      • 1...Rxd6
        • 2.Qe4#
      • 1...Bxd6
        • 2.Qd4#
      • 1...Sxg7
        • 2.Bg3#
      • 1...cxd6
        • 2.Re7#
      • 1...Bd4
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(f);::QAR1(C)
    • B(c);N_GUARD::QAB1(C),XB(c)
    • B(c);N_GUARD::QAB1(C)
    • S(e);CHECK,N_GUARD::B(D),XS(e)
  • Tries
    • Try
      • B(D);CHECK
      • Vars
        • S(e);N_GUARD,P_SPINS(e)::B(D),XS(e)
      • Refutation
        • S(e);CHECK,XB(D)
  • Actual
    • S(H);
    • Threat
      • S(H)
    • Vars
      • S(e);CHECK,N_GUARD::B(D),XS(e)
      • K(d);S_FLIGHT,XS(H)::QAR1(C)
      • R(f);SBLOCK,XS(H)::QAR1(C)
      • B(c);N_GUARD,XS(H)::QAB1(C)
      • S(e);N_GUARD,XS(F)::B(D)
      • P(h);OGATE,SBLOCK,XS(H)::R(E)
      • B(c);N_GUARD::QAB1(C),XB(c)
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