MESON Chess Problem Database

Problem Display
PID: 232723 (5q1Q/1B2p3/5r2/b1p5/Rp2N3/PP1kB3/4Rp2/5K2 w - - 0 1)

Groeneveld, Cornelis

Freie Presse, 1989

5q1Q/1B2p3/5r2/b1p5/Rp2N3/PP1kB3/4Rp2/5K2

#2

9 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rf3
      • 2.Sxc5#
    • 1...Rf4
      • 2.Sxc5#
    • 1...Ra6
      • 2.Sxc5#
    • 1...Rb6
      • 2.Sxc5#
    • 1...Rd6
      • 2.Sxc5#
    • 1...Re6
      • 2.Sxc5#
    • 1...Rg6
      • 2.Sxc5#
    • 1...Rh6
      • 2.Sxc5#
    • 1...Rf7
      • 2.Sxc5#
  • Tries
    • 1.Bxc5?
      • threat
        • 2.Rd2#
      • 1...bxa3
        • 2.Rd4#
      • 1...Rc6
        • 2.Qd4#
      • 1...Qh6!
    • 1.Qh3?
      • threat
        • 2.Rd2#
      • 1...bxa3
        • 2.Bf4#
      • 1...Rf3
        • 2.Qd7#
      • 1...Rc6!
  • Keys
    • 1.Bf4!
      • threat
        • 2.Rd2#
      • 1...Kd4
        • 2.Rd2#
      • 1...Rxf4
        • 2.Sxc5#
      • 1...bxa3
        • 2.Qh3#
      • 1...Rc6
        • 2.Sxf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 8
  • Sets
    • R(f);::S(G),XP(e)
  • Tries
    • Try
      • B(E);XP(e)
      • Threat
        • R1(B)
      • Vars
        • P(c);OGATE,XP(C)::R1(F)
        • R(f);OGATE::QAR1(I)
      • Refutation
        • Q(h);
    • Try
      • Q(I);
      • Threat
        • R1(B)
      • Vars
        • P(c);XP(C)::QAR(I)+B(E)
        • R(f);N_GUARD::QAR(I)
      • Refutation
        • R(f);
  • Actual
    • B(E);
    • Threat
      • R1(B)
    • Vars
      • K(b);P-FLIGHT,P_SPINP(c),P_SPINR(f)::R(B)
      • R(f);XB(E)::S(G),XP(e)
      • P(c);XP(C)::QAR(I)
      • R(f);::S(G),XP(a)
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