MESON Chess Problem Database

Problem Display
PID: 217755 (4Kn2/4B3/4k3/1B1p2R1/1P2p1P1/2p2R1b/nP1P4/5r1r w - - 0 1)

Ernst, Erich

Badische Neueste Nachrichten, 1994

4Kn2/4B3/4k3/1B1p2R1/1P2p1P1/2p2R1b/nP1P4/5r1r

#2

9 + 9

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Rf6#
    • 1...Rb1
      • 2.Rf6#
    • 1...Rc1
      • 2.Rf6#
    • 1...Rd1
      • 2.Rf6#
    • 1...Re1
      • 2.Rf6#
    • 1...Rfg1
      • 2.Rf6#
    • 1...Sg6
      • 2.Bd7#
    • 1...Sd7
      • 2.Bxd7#
    • 1...Sh7
      • 2.Bd7#
    • 1...e3
      • 2.Rxe3#
    • 1...d4
      • 2.Bc4#
  • Tries
    • 1.Bc6?
      • threat
        • 2.Bxd5#
      • 1...d4
        • 2.Bd5#
      • 1...Sxb4!
    • 1.Rff5?
      • threat
        • 2.Re5#
      • 1...Sg6
        • 2.Bd7#
        • 2.Rxg6#
      • 1...Sd7
        • 2.Bxd7#
      • 1...Rxf5!
  • Keys
    • 1.d4!
      • threat
        • 2.Re5#
      • 1...exd4 ep
        • 2.Re3#
      • 1...Sg6
        • 2.Bd7#
        • 2.Rxg6#
      • 1...Sd7
        • 2.Bxd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 10
  • Sets
    • R(a);N_GUARD::R1(C)
    • S(i);N_GUARD::B(F)
    • S(i);N_GUARD::B(F),XS(i)
    • P(f);OGATEB::R(C),XP(f)
    • P(g);OGATEB::B(F)
  • Tries
    • Try
      • B(F);
      • Threat
        • B(F),XP(g)
      • Vars
        • P(g);::B(F)
      • Refutation
        • S(c);XP(D)
    • Try
      • R(C);
      • Threat
        • R1(C)
      • Vars
        • S(i);N_GUARD::B(F),XS(i)
      • Refutation
        • R(a);XR(C)
  • Actual
    • P(B);
    • Threat
      • R1(G)
    • Vars
      • P(f);EP,OGATEB,XP(B)::R(C)
      • S(i);N_GUARD::B(F),XS(i)
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