MESON Chess Problem Database

Problem Display
PID: 243760 (8/1n6/1N2pK2/1R6/1p1kp3/3P4/2P3R1/3N3B w - - 0 1)

Berg, Wolfgang

Sachove umeni (Ceskoslovensky sach), 1995

8/1n6/1N2pK2/1R6/1p1kp3/3P4/2P3R1/3N3B

#2

8 + 5

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sc5
      • 2.Rxb4#
    • 1...exd3
      • 2.Rg4#
    • 1...e3
      • 2.Rg4#
    • 1...e5
      • 2.Rd5#
  • Tries
    • 1.Rd2?
      • threat
        • 2.dxe4#
      • 1...exd3
        • 2.Rxd3#
      • 1...Sc5
        • 2.Rxb4#
      • 1...e3!
    • 1.Rg4?
      • threat
        • 2.Rxe4#
      • 1...Sc5
        • 2.Rxb4#
      • 1...Sd6!
  • Keys
    • 1.dxe4!
      • threat
        • 2.Rd2#
      • 1...Kxe4
        • 2.Rg4#
      • 1...Sc5
        • 2.Rxb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • S(e);SBLOCK::R(F),XP(a)
    • P(c);OGATEB,XP(E)::R(D)
    • P(c);OGATEB::R(D)
    • P(d);N_GUARD::R1(F)
  • Tries
    • Try
      • R(D);
      • Threat
        • R(D)+P(E),XP(c)
      • Vars
        • P(c);OGATE,P_SPINP(c),XP(E)::R1(D),XP(c)
        • S(e);SBLOCK::R(F),XP(a)
      • Refutation
        • P(c);
    • Try
      • R(D);P_PINP(c)
      • Threat
        • R1(D),XP(c)
      • Vars
        • S(e);SBLOCK::R(F),XP(a)
      • Refutation
        • S(e);
  • Actual
    • P(E);XP(c)
    • Threat
      • R(D)
    • Vars
      • K(b);OGATEB,P-FLIGHT,XP(E)::B(B)+R(D),DCHECK
      • S(e);SBLOCK::R(F),XP(a)
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