MESON Chess Problem Database

Problem Display
PID: 209527 (2B5/2p1b2r/n1NBpp2/RN3k1P/R4Pp1/KpP1r1P1/2b1P3/8 w - - 0 1)

Mehner, Heinrich

Badische Neueste Nachrichten, 1965

2B5/2p1b2r/n1NBpp2/RN3k1P/R4Pp1/KpP1r1P1/2b1P3/8

#2

12 + 11

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.e4#
    • 1...Re4
      • 2.Sbd4#
    • 1...Rxh5
      • 2.Sxe7#
    • 1...Rh6
      • 2.Sxe7#
    • 1...Rh8
      • 2.Sxe7#
    • 1...Be4
      • 2.Sbd4#
      • 2.Scd4#
    • 1...Bxd6+
      • 2.Sxd6#
    • 1...cxd6
      • 2.Sxd6#
  • Tries
    • 1.Sxc7+?
      • 1...Re5
        • 2.Bxe6#
      • 1...Sc5!
  • Keys
    • 1.Bb7!
      • threat
        • 2.Scd4#
      • 1...Bxd6+
        • 2.Sxd6#
      • 1...Rxh5
        • 2.Sxe7#
      • 1...e5
        • 2.Bc8#
      • 1...Rd3
        • 2.e4#
      • 1...Re4
        • 2.Sbd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • R(c);OGATE::P(A)
    • R(c);SBLOCK::R(G)+S(H),DCHECK
    • R(k);N_GUARD,XP(I)::S(J),XB(j)
    • R(k);N_GUARD::S(J),XB(j)
    • B(j);CHECK,XB(K)::R(G)+S(H),DCHECK,XB(j)
    • P(i);XB(K)::R(G)+S(H),DCHECK,XP(i)
  • Tries
    • Try
      • S(H);CHECK,XP(i)
      • Vars
        • R(c);P_SPINR(c)::B(L),XP(g)
      • Refutation
        • S(f);N_PINB(K),P_SPINS(f)
  • Actual
    • B(L);N_PINP(g)
    • Threat
      • S(J)
    • Vars
      • B(j);CHECK,XB(K)::R(G)+S(H),DCHECK,XB(j)
      • R(k);N_GUARD,XP(I)::S(J),XB(j)
      • P(g);OGATEB::B(L)
      • R(c);OGATE::P(A)
      • R(c);SBLOCK::R(G)+S(H),DCHECK
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