MESON Chess Problem Database

Problem Display
PID: 73045 (8/2pK2b1/8/Q2NpR2/4k2n/3NP2B/n1r2p2/3R4 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Neue Osnabrucker Zeitung, 1993

8/2pK2b1/8/Q2NpR2/4k2n/3NP2B/n1r2p2/3R4

#2

8 + 8

6113 Problemschach-Jahrbuch (1993) 1994

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1
      • 2.Sxf2#
    • 1...Rb2
      • 2.Sc5#
    • 1...Re2
      • 2.Sc5#
    • 1...Rc3
      • 2.Sxf2#
    • 1...Rc4
      • 2.Sxf2#
    • 1...Rc5
      • 2.Sxf2#
      • 2.Sxc5#
    • 1...Rc6
      • 2.Sxf2#
    • 1...Sc3
      • 2.Sc5#
    • 1...Sxf5
      • 2.Bg2#
  • Tries
    • 1.Sf6+?
      • 1...Kxe3
        • 2.Qxe5#
      • 1...Bxf6!
    • 1.Qb4+?
      • 1...Kxd5
        • 2.Sf4#
        • 2.Qd4#
        • 2.e4#
      • 1...Rc4
        • 2.Sxf2#
        • 2.Sc5#
        • 2.Qxc4#
      • 1...Sxb4!
    • 1.Qa4+?
      • 1...Kxd5
        • 2.Qd4#
        • 2.e4#
      • 1...Rc4
        • 2.Sxf2#
        • 2.Sc5#
        • 2.Qxc4#
      • 1...Sb4!
  • Keys
    • 1.Qc3!
      • threat
        • 2.Sc5#
      • 1...Kxd5
        • 2.Qd4#
      • 1...Rxc3
        • 2.Sxf2#
      • 1...Sxf5
        • 2.Bg2#
      • 1...Rd2
        • 2.Qc4#
      • 1...Bf8
        • 2.Qxe5#
      • 1...c5
        • 2.Sxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • R(b);N_GUARD::S(B),XP(c)
    • R(b);N_GUARD::S(B)
    • S(a);S_CUTR(b)::S(B)
    • S(e);N_GUARD,SBLOCK,XR(G)::B(D)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(d);P-FLIGHT,XP(C)::QAR2(E),XP(f)
      • Refutation
        • B(h);XS(F)
    • Try
      • Q(E);CHECK
      • Refutation
        • S(a);XQ(E)
    • Try
      • Q(E);CHECK
      • Refutation
        • S(a);P_SPINS(a)
  • Actual
    • Q(E);
    • Threat
      • S(B)
    • Vars
      • K(d);P_SPINP(f),S_FLIGHT,XS(F)::QAR1(E)
      • R(b);N_GUARD,XQ(E)::S(B),XP(c)
      • S(e);N_GUARD,SBLOCK,XR(G)::B(D)
      • R(b);N_GUARD::QAR2(E)
      • B(h);N_GUARD::QAR1(E),XP(f)
      • P(g);::S(B),XP(g)
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