MESON Chess Problem Database

Problem Display
PID: 179904 (nB5r/1ppPrPQ1/1Rp1P3/1NKP1pN1/5k2/4p2R/4Bb2/8 w - - 0 1)

Gross, Erwin

1st HM., Europe Echecs, 1978

nB5r/1ppPrPQ1/1Rp1P3/1NKP1pN1/5k2/4p2R/4Bb2/8

#2

12 + 10

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sxb6
      • 2.Bxc7#
  • Tries
    • 1.Sxc7?
      • threat
        • 2.Rb4#
      • 1...Rxe6
        • 2.Scxe6#
      • 1...Rxh3
        • 2.Sxa8#
      • 1...Sxb6
        • 2.Se8#
      • 1...cxd5
        • 2.Sxd5#
      • 1...Be1!
  • Keys
    • 1.Sc3!
      • threat
        • 2.Rb4#
      • 1...Rxe6
        • 2.Sxe6#
      • 1...Rxh3
        • 2.Sxh3#
      • 1...Sxb6
        • 2.Bxc7#
      • 1...cxd5
        • 2.Sxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(i);N_GUARD,XR(G)::B(L),XP(g)
  • Tries
    • Try
      • S(C);XP(g)
      • Threat
        • R(G)
      • Vars
        • R(h);XP(H)::B(L)+S(C),DCHECK,XR(h)
        • R(j);N_GUARD,XR(B)::B(L)+S(C),XS(i)
        • S(i);N_GUARD,XR(G)::B(L)+S(C)
        • P(e);XP(E)::B(L)+S(C),DCHECK,XP(e)
      • Refutation
        • B(a);
  • Actual
    • S(C);
    • Threat
      • R(G)
    • Vars
      • R(h);XP(H)::S(F),XR(h)
      • R(j);XR(B)::S(F),XR(j)
      • S(i);N_GUARD,XR(G)::B(L),XP(g)
      • P(e);XP(E)::S(C),XP(e)
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