MESON Chess Problem Database

Problem Display
PID: 101327 (2b5/3p1B2/1B3r2/2N5/1PpkpPRp/R4p1K/2P5/b5N1 w - - 0 1)

Beach, Lennox F

Good Companions, 1920

2b5/3p1B2/1B3r2/2N5/1PpkpPRp/R4p1K/2P5/b5N1

#2

10 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf4
      • 2.Sd3#
      • 2.Sxd7#
    • 1...Bc3
      • 2.Sb3#
    • 1...f2
      • 2.Se2#
    • 1...c3
      • 2.Sb3#
    • 1...e3
      • 2.Sxf3#
    • 1...d5
      • 2.Se6#
    • 1...d6
      • 2.Sd3#
      • 2.Sa4#
      • 2.Sa6#
      • 2.Sb7#
      • 2.Sd7#
  • Tries
    • 1.Rg5?
      • threat
        • 2.Se6#
        • 2.Rd5#
      • 1...d5+
        • 2.Se6#
      • 1...d6+
        • 2.Se6#
        • 2.Sd7#
      • 1...Rxb6
        • 2.Rd5#
      • 1...Rxf7
        • 2.Sd3#
        • 2.Sa4#
        • 2.Sa6#
        • 2.Se6#
        • 2.Sb7#
        • 2.Sxd7#
      • 1...Bc3
        • 2.Sb3#
        • 2.Se6#
      • 1...c3
        • 2.Sb3#
      • 1...Rd6
        • 2.Se6#
      • 1...Re6
        • 2.Sxe6#
      • 1...Bb7
        • 2.Se6#
      • 1...e3
        • 2.Sxf3#
        • 2.Rd5#
      • 1...Rf5!
  • Keys
    • 1.Rg2!
      • threat
        • 2.Rd2#
      • 1...d5+
        • 2.Se6#
      • 1...d6+
        • 2.Sd7#
      • 1...Rxf4
        • 2.Sd3#
        • 2.Sxd7#
      • 1...fxg2
        • 2.Se2#
      • 1...Bc3
        • 2.Sb3#
      • 1...c3
        • 2.Sb3#
      • 1...f2
        • 2.Se2#
      • 1...e3
        • 2.Sxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(a);SBLOCK::B(I)+S(H),DCHECK
    • P(b);N_GUARD::S(A)
    • P(c);SBLOCK::B(I)+S(H),DCHECK
    • P(e);N_GUARD::S(A),XP(b)
    • P(h);P_PINR(G),SBLOCK::B(I)+S(H),DCHECK
  • Tries
    • Try
      • R(G);
      • Threat
        • DUALS(2)
      • Vars
        • P(h);CHECK::B(I)+S(H),DCHECK
        • R(g);XB(I)::R1(G)
        • P(c);SBLOCK::B(I)+S(H),DCHECK
        • R(g);::B(I)+S(H),DCHECK
        • R(g);::B(I)+S(H),DCHECK,XR(g)
        • B(i);::B(I)+S(H),DCHECK
      • Refutation
        • R(g);
  • Actual
    • R(G);
    • Threat
      • R(G)
    • Vars
      • P(h);CHECK,SBLOCK::B(I)+S(H),DCHECK
      • P(h);CHECK,S_CUTR(g)::B(I)+S(H)
      • P(b);N_GUARD,XR(G)::S(A)
      • B(a);SBLOCK::B(I)+S(H),DCHECK
      • P(c);SBLOCK::B(I)+S(H),DCHECK
      • P(b);N_GUARD::S(A)
      • P(e);N_GUARD::S(A),XP(b)
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