MESON Chess Problem Database

Problem Display
PID: 176110 (3r4/2RB2n1/1P1k1PK1/4p3/2p1P3/p2b1N2/8/1nBRb3 w - - 0 1)

Freund, W

Schach-Echo, 1940

3r4/2RB2n1/1P1k1PK1/4p3/2p1P3/p2b1N2/8/1nBRb3

#2

9 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sd2
      • 2.Bxa3#
    • 1...Sc3
      • 2.Bxa3#
    • 1...c3
      • 2.Rxd3#
  • Tries
    • 1.Bxa3+?
      • 1...Bb4
        • 2.Bxb4#
      • 1...Sxa3!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Sb5#
      • 1...Bxe4+
        • 2.Sf5#
      • 1...Rxd7
        • 2.Rc6#
      • 1...exd4
        • 2.Bf4#
      • 1...Sc3
        • 2.Bxa3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • S(a);N_GUARD,N_SPINB(d),S_CUTB(b)::B(A),XP(c)
    • S(a);N_GUARD,S_CUTB(b)::B(A),XP(c)
    • P(e);N_GUARD::R(B),XB(d)
  • Tries
    • Try
      • B(A);CHECK,XP(c)
      • Vars
        • B(b);N_GUARD::B(A),XB(b)
      • Refutation
        • S(a);XB(A)
  • Actual
    • S(C);N_PINB(d)
    • Threat
      • S(C)
    • Vars
      • B(d);CHECK,XP(D)::R(B)+S(C),DCHECK
      • R(i);SBLOCK,XB(I)::R1(H)
      • P(f);OGATEB,XS(C)::B(A)
      • S(a);N_GUARD,S_CUTB(b)::B(A),XP(c)
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