MESON Chess Problem Database

Problem Display
PID: 82110 (8/8/4Kn1n/1N1ppp2/1N2k3/1rR5/3PP3/b2b1R2 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Problemas, 1964

8/8/4Kn1n/1N1ppp2/1N2k3/1rR5/3PP3/b2b1R2

#2

7 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Re3#
    • 1...Rb2
      • 2.Re3#
    • 1...Rxb4
      • 2.Re3#
    • 1...d4
      • 2.Sd6#
  • Tries
    • 1.Sc2?
      • threat
        • 2.Sd6#
        • 2.d3#
      • 1...Rxc3
        • 2.Sd6#
      • 1...Rxb5
        • 2.Re3#
        • 2.d3#
      • 1...Bxe2
        • 2.Sd6#
      • 1...Se8
        • 2.d3#
      • 1...Sf7
        • 2.d3#
      • 1...Bxc2!
    • 1.Rc4+?
      • 1...Bd4
        • 2.Sd6#
      • 1...d4
        • 2.Sd6#
      • 1...dxc4!
  • Keys
    • 1.Sd6+!
      • 1...Kd4
        • 2.Sc6#
        • 2.e3#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • R(c);N_GUARD::R1(D)
    • R(c);N_GUARD,XS(E)::R1(D)
    • P(e);SBLOCK::S(F)
  • Tries
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • R(c);XR(D)::S(F)
        • B(b);XP(C)::S(F)
        • S(h);::P(B)
        • S(i);::P(B)
      • Refutation
        • B(b);XS(E)
    • Try
      • R(D);CHECK
      • Vars
        • B(a);P_SPINB(a)::S(F)
        • P(e);P_SPINP(e)::S(F)
      • Refutation
        • P(e);XR(D)
  • Actual
    • S(F);CHECK
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