MESON Chess Problem Database

Problem Display
PID: 75263 (3R4/8/2N4B/p3P1r1/2p1pN2/2k5/K4R2/4n3 w - - 0 1)

Guida, Marco

1st Prize, diagrammes, 2004

3R4/8/2N4B/p3P1r1/2p1pN2/2k5/K4R2/4n3

#2

7 + 6

4901 Best Problems 2007
145 StrateGems 2007
56 The Problemist 2007
23 Die Schwalbe 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Sc2
      • 2.Se2#
    • 1...Sd3
      • 2.Sd5#
  • Tries
    • 1.Rc2+?
      • 1...Sxc2
        • 2.Se2#
      • 1...Kxc2!
    • 1.Rfd2?
      • threat
        • 2.Se2#
      • 1...Rg2
        • 2.Sd5#
      • 1...Sd3!
    • 1.Rd3+?
      • 1...Sxd3
        • 2.Sd5#
      • 1...exd3
        • 2.Sd5#
      • 1...cxd3!
  • Keys
    • 1.Rdd2!
      • threat
        • 2.Sd5#
      • 1...Rxe5
        • 2.Se2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • S(a);SBLOCK::S(C)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • S(a);SBLOCK,XR(B)::S(C)
      • Refutation
        • K(b);P-FLIGHT,XR(B)
    • Try
      • R(B);
      • Threat
        • S(C)
      • Vars
        • R(f);P_PINR(B)::S(C)
      • Refutation
        • S(a);
    • Try
      • R(G);CHECK
      • Vars
        • S(a);SBLOCK,XR(G)::S(C)
        • P(d);SBLOCK,XR(G)::S(C)
      • Refutation
        • P(c);XR(G)
  • Actual
    • R(G);
    • Threat
      • S(C)
    • Vars
      • R(f);XP(D)::S(C)
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