MESON Chess Problem Database

Problem Display
PID: 7203 (8/K1p5/B4NR1/1PkP3r/5B2/P1P1P3/bN6/2r5 w - - 0 1)

Kavnatsky, Isaak

4th Prize, StrateGems, 1998

8/K1p5/B4NR1/1PkP3r/5B2/P1P1P3/bN6/2r5

#2

11 + 5

145 StrateGems 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd5
      • 2.Se4#
    • 1...Bc4
      • 2.Sa4#
    • 1...Bxd5
      • 2.Sd7#
  • Tries
    • 1.Rg5?
      • threat
        • 2.Se4#
        • 2.Sd7#
      • 1...Rh7
        • 2.Se4#
      • 1...Bb1
        • 2.Sd7#
      • 1...Rxg5!
    • 1.b6?
      • threat
        • 2.Sd3#
        • 2.Sa4#
      • 1...Rxc3
        • 2.Sa4#
      • 1...Rxd5
        • 2.Se4#
      • 1...Bxd5
        • 2.Sd7#
      • 1...Rd1
        • 2.Sa4#
      • 1...Bb1
        • 2.Sa4#
      • 1...Bb3
        • 2.Sd3#
      • 1...Bc4
        • 2.Sa4#
      • 1...Re5!
  • Keys
    • 1.c4!
      • threat
        • 2.Se4#
        • 2.Sd7#
      • 1...Rxc4
        • 2.Sd3#
      • 1...Rxd5
        • 2.Se4#
      • 1...Bxc4
        • 2.Sa4#
      • 1...Re5
        • 2.Sd7#
      • 1...Rh7
        • 2.Se4#
      • 1...Bb1
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(d);SBLOCK,XP(G)::S(I)
    • B(b);SBLOCK::S(A)
    • B(b);SBLOCK,XP(G)::S(I)
  • Tries
    • Try
      • R(J);
      • Threat
        • DUALS(2)
      • Vars
        • R(d);::S(I)
        • B(b);::S(I)
      • Refutation
        • R(d);XR(J)
    • Try
      • P(F);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);XP(C)::S(A)
        • R(d);SBLOCK,XP(G)::S(I)
        • B(b);SBLOCK,XP(G)::S(I)
        • R(a);::S(A)
        • B(b);::S(A)
      • Refutation
        • R(d);
  • Actual
    • P(C);
    • Threat
      • DUALS(2)
    • Vars
      • R(a);SBLOCK,XP(C)::S(A)
      • R(d);XP(G)::S(I)
      • B(b);SBLOCK,XP(C)::S(A)
      • R(d);::S(I)
      • B(b);::S(I)
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