MESON Chess Problem Database

Problem Display
PID: 6489 (6R1/5R2/3pp3/3Pk3/7p/2K4n/7p/7B w - - 0 1)

Berghmans, Josef

3rd Prize, Vlaamse Problemistenbond, 1929

6R1/5R2/3pp3/3Pk3/7p/2K4n/7p/7B

#2

5 + 6

3310 2345 Chess Problems 1997
3389 Belgian Solving Championship 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Sg1
      • 2.Rg5#
    • 1...Sf2
      • 2.Rg5#
    • 1...Sf4
      • 2.Rg5#
    • 1...Sg5
      • 2.Rxg5#
    • 1...exd5
      • 2.Re8#
  • Tries
    • 1.Kc4?
      • 1...Sg1
        • 2.Rg5#
      • 1...Sf2
        • 2.Rg5#
      • 1...Sf4
        • 2.Rg5#
      • 1...Sg5
        • 2.Rxg5#
      • 1...exd5+!
    • 1.Rff8?
      • 1...Sg1
        • 2.Rg5#
      • 1...Sf2
        • 2.Rg5#
      • 1...Sf4
        • 2.Rg5#
      • 1...Sg5
        • 2.Rxg5#
      • 1...exd5!
    • 1.Rg3?
      • threat
        • 2.Re3#
      • 1...Sf2
        • 2.Rg5#
      • 1...Sg5
        • 2.Rxg5#
      • 1...hxg3!
    • 1.Rg4?
      • 1...Sg1
        • 2.Rg5#
      • 1...Sf2
        • 2.Rg5#
      • 1...Sf4
        • 2.Rg5#
      • 1...Sg5
        • 2.Rxg5#
      • 1...exd5!
    • 1.Rg6?
      • threat
        • 2.Rxe6#
      • 1...Sf4
        • 2.Rg5#
      • 1...Sg5
        • 2.Rxg5#
      • 1...exd5!
    • 1.Rgg7?
      • 1...Sg1
        • 2.Rg5#
      • 1...Sf2
        • 2.Rg5#
      • 1...Sf4
        • 2.Rg5#
      • 1...Sg5
        • 2.Rxg5#
      • 1...exd5!
  • Keys
    • 1.Rg2!
      • threat
        • 2.Re2#
      • 1...Ke4
        • 2.Re2#
      • 1...Kxd5
        • 2.Rg5#
      • 1...Sg1
        • 2.Rg5#
      • 1...Sf2
        • 2.Rg5#
      • 1...Sf4
        • 2.Rg5#
      • 1...Sg5
        • 2.Rxg5#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • S(b);N_GUARD::R(E)
    • S(b);N_GUARD::R(E),XS(b)
    • P(f);OGATEB,XP(C)::R(E)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • S(b);N_GUARD::R(E)
        • S(b);N_GUARD::R(E),XS(b)
      • Refutation
        • P(f);CHECK,XP(C)
    • Try
      • R(D);
      • Vars
        • S(b);N_GUARD::R(E)
        • S(b);N_GUARD::R(E),XS(b)
      • Refutation
        • P(f);XP(C)
    • Try
      • R(E);
      • Threat
        • R(E)
      • Vars
        • S(b);N_GUARD::R(E)
        • S(b);N_GUARD::R(E),XS(b)
      • Refutation
        • P(c);XR(E)
    • Try
      • R(E);
      • Vars
        • S(b);N_GUARD::R(E)
        • S(b);N_GUARD::R(E),XS(b)
      • Refutation
        • P(f);XP(C)
    • Try
      • R(E);
      • Threat
        • R1(E),XP(f)
      • Vars
        • S(b);N_GUARD::R(E)
        • S(b);N_GUARD::R(E),XS(b)
      • Refutation
        • P(f);XP(C)
    • Try
      • R(E);
      • Vars
        • S(b);N_GUARD::R(E)
        • S(b);N_GUARD::R(E),XS(b)
      • Refutation
        • P(f);XP(C)
  • Actual
    • R(E);
    • Threat
      • R(E)
    • Vars
      • K(d);P-FLIGHT::B(A)+R(E),DCHECK
      • K(d);P-FLIGHT,XP(C)::B(A)+R(E),DCHECK
      • S(b);N_GUARD::R(E)
      • S(b);N_GUARD::R(E),XS(b)
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