MESON Chess Problem Database

Problem Display
PID: 208468 (7K/2Qp4/2Prp3/1N1kpn2/4n2R/NR3r2/2P5/B3b2B w - - 0 1)

Kohring, Rolf

Badische Neueste Nachrichten, 1987

7K/2Qp4/2Prp3/1N1kpn2/4n2R/NR3r2/2P5/B3b2B

#2

10 + 9

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc6
      • 2.Qxe5#
    • 1...Sc5
      • 2.c4#
  • Tries
    • 1.Qb6?
      • threat
        • 2.Sc7#
        • 2.c4#
      • 1...Rc3
        • 2.Sc7#
        • 2.Bxe4#
      • 1...Bc3
        • 2.Sc7#
      • 1...Sd2
        • 2.Sc3#
        • 2.Sc7#
      • 1...Sc3
        • 2.Sc7#
      • 1...Se3
        • 2.Sc7#
        • 2.Rd3#
      • 1...Rxc6!
  • Keys
    • 1.cxd7!
      • threat
        • 2.Qc4#
        • 2.c4#
      • 1...Rc6
        • 2.Qxe5#
      • 1...Rc3
        • 2.Bxe4#
      • 1...Bc3
        • 2.Qc4#
      • 1...Sd2
        • 2.Sc3#
      • 1...Sc3
        • 2.Qc4#
      • 1...Sc5
        • 2.c4#
      • 1...Se3
        • 2.Rd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(g);OGATE,SBLOCK,XP(H)::QAR1(I),XP(e)
    • S(c);P_SPINR(b),SBLOCK::P(C)
  • Tries
    • Try
      • Q(I);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);::S(G)
        • S(c);P_SPINR(b)::S(G)
      • Refutation
        • R(g);XP(H)
  • Actual
    • P(H);XP(i)
    • Threat
      • DUALS(2)
    • Vars
      • R(g);OGATE,SBLOCK::QAR1(I),XP(e)
      • R(b);OGATE,P_SPINS(c)::B(B),XS(c)
      • B(a);::QAB1(I)
      • S(c);N_GUARD,P_SPINR(b),S_CUTB(a)::S(G)
      • S(c);P_SPINR(b)::QAB1(I)
      • S(c);P_SPINR(b)::P(C)
      • S(f);N_GUARD,S_CUTR(b)::R(E)
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