MESON Chess Problem Database

Problem Display
PID: 205749 (8/2p5/4K3/5N2/3pkp2/3R4/2P5/8 w - - 0 1)

Maier, A

Arbeiter Schachzeitung, 1925

8/2p5/4K3/5N2/3pkp2/3R4/2P5/8

#2

4 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...f3
      • 2.Rxd4#
    • 1...c5
      • 2.Sd6#
    • 1...c6
      • 2.Sd6#
  • Tries
    • 1.Rg3?
      • 1...f3
        • 2.Rg4#
      • 1...c5
        • 2.Sd6#
      • 1...d3
        • 2.cxd3#
      • 1...c6
        • 2.Sd6#
      • 1...fxg3!
  • Keys
    • 1.Rh3!
      • 1...f3
        • 2.Rh4#
      • 1...c5
        • 2.Sd6#
      • 1...d3
        • 2.cxd3#
      • 1...c6
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(c);SBLOCK::R1(B),XP(a)
    • P(d);N_GUARD::S(C)
  • Tries
    • Try
      • R(B);
      • Vars
        • P(c);OGATEB,SBLOCK::R(B)
        • P(d);N_GUARD::S(C)
        • P(a);OGATE::P(A),XP(a)
      • Refutation
        • P(c);XR(B)
  • Actual
    • R(B);
    • Vars
      • P(c);OGATEB,SBLOCK::R(B)
      • P(d);N_GUARD::S(C)
      • P(a);OGATE::P(A),XP(a)
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