MESON Chess Problem Database

Problem Display
PID: 228047 (8/5P2/1pP1B3/pP3NP1/Rp2k2P/4PNKP/2P4R/8 w - - 0 1)

Berg, Wolfgang

Freie Presse, 1987

8/5P2/1pP1B3/pP3NP1/Rp2k2P/4PNKP/2P4R/8

#2

14 + 4

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Tries
    • 1.S3d4?
      • 1...b3
        • 2.Sf3#
      • 1...Ke5!
    • 1.Bc4?
      • 1...b3
        • 2.Be6#
      • 1...Kxf5!
    • 1.Ra1?
      • 1...b3
        • 2.Ra4#
      • 1...a4!
    • 1.Ra2?
      • 1...b3
        • 2.Ra4#
      • 1...a4!
    • 1.Ra3?
      • threat
        • 2.Sd6#
      • 1...b3
        • 2.Ra4#
      • 1...bxa3!
    • 1.Rxa5?
      • 1...b3
        • 2.Ra4#
      • 1...bxa5!
  • Keys
    • 1.S5d4!
      • 1...Kxe3
        • 2.Re2#
      • 1...b3
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);N_PINP(a)
      • Vars
        • P(a);::R(G)+S(D)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • B(M);N_PINP(a)
      • Vars
        • P(a);OGATEB::R(G)+B(M)
      • Refutation
        • K(b);S_FLIGHT,XS(J)
    • Try
      • R(G);N_PINP(a)
      • Vars
        • P(a);OGATEB::R(G)
      • Refutation
        • P(c);
    • Try
      • R(G);N_PINP(a)
      • Vars
        • P(a);OGATEB::R(G)
      • Refutation
        • P(c);
    • Try
      • R(G);N_PINP(a)
      • Threat
        • S(J)
      • Vars
        • P(a);OGATEB::R(G)
      • Refutation
        • P(a);XR(G)
    • Try
      • R(G);N_PINP(a),XP(c)
      • Vars
        • P(a);OGATEB::R(G)
      • Refutation
        • P(d);XR(G)
  • Actual
    • S(J);N_PINP(a)
    • Vars
      • K(b);OGATEB,P-FLIGHT,XP(C)::R1(B)
      • P(a);::R(G)+S(J)
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