MESON Chess Problem Database

Problem Display
PID: 240190 (6B1/8/3N4/1Nn1k1P1/1r1p1pK1/4PR2/7b/3R4 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Problem-Forum, 2005

6B1/8/3N4/1Nn1k1P1/1r1p1pK1/4PR2/7b/3R4

#2

8 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.exd4#
    • 1...Rb2
      • 2.exd4#
    • 1...Rb3
      • 2.exd4#
    • 1...Bg1
      • 2.exf4#
    • 1...dxe3
      • 2.Rd5#
    • 1...fxe3
      • 2.Rf5#
  • Tries
    • 1.Sc4+?
      • 1...Ke4
        • 2.Sbd6#
        • 2.Rxd4#
      • 1...Rxc4!
    • 1.Rxf4?
      • threat
        • 2.Rf5#
      • 1...Rxb5
        • 2.Sc4#
      • 1...Bxf4
        • 2.exf4#
      • 1...dxe3
        • 2.Rd5#
      • 1...d3!
  • Keys
    • 1.Rxd4!
      • threat
        • 2.Rd5#
      • 1...Rxd4
        • 2.exd4#
      • 1...fxe3
        • 2.Rf5#
      • 1...Se6
        • 2.Sf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • R(b);N_GUARD::P(B),XP(c)
    • B(a);N_GUARD::P(B),XP(d)
    • P(c);OGATE,XP(B)::R1(A)
    • P(d);OGATE,XP(B)::R1(C)
  • Tries
    • Try
      • S(G);CHECK
      • Refutation
        • R(b);XS(G)
    • Try
      • R(C);XP(d)
      • Threat
        • R1(C)
      • Vars
        • R(b);N_GUARD,XS(E)::S(G)
        • B(a);OGATE,XR(C)::P(B),XB(a)
        • P(c);OGATE,P_PINR(C),XP(B)::R1(A)
      • Refutation
        • P(c);P_PINR(C)
  • Actual
    • R(A);XP(c)
    • Threat
      • R1(A)
    • Vars
      • R(b);OGATE,XR(A)::P(B),XR(b)
      • P(d);OGATE,P_PINR(A),XP(B)::R1(C)
      • S(e);SBLOCK::S(G)
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