MESON Chess Problem Database

Problem Display
PID: 186858 (4K3/Qp2N2B/pp2Rp1b/2P5/3k3r/NR2n3/5q2/3r2B1 w - - 0 1)

Groeneveld, Cornelis

Pituk, Alexander

Freie Presse, 2000

(First published on Fri Aug 25 2000)

4K3/Qp2N2B/pp2Rp1b/2P5/3k3r/NR2n3/5q2/3r2B1

#2

9 + 10

15391 Problemschach-Jahrbuch (2000) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc5
      • 2.Qxb6#
  • Tries
    • 1.Rd3+?
      • 1...Kxc5
        • 2.Qxb6#
      • 1...Rxd3!
    • 1.Rb4+?
      • 1...Kxc5
        • 2.Qxb6#
      • 1...Sc4
        • 2.Rxc4#
      • 1...Kc3!
    • 1.Re4+?
      • 1...Kxc5
        • 2.Qxb6#
      • 1...Rxe4!
    • 1.Rd6+?
      • 1...Kxc5
        • 2.Qxb6#
      • 1...Sd5
        • 2.Rxd5#
      • 1...Ke5!
  • Keys
    • 1.Qxb6!
      • threat
        • 2.c6#
      • 1...Qc2
        • 2.Qd6#
      • 1...Qf5
        • 2.Qb4#
      • 1...Rc1
        • 2.Rd3#
      • 1...Rh5
        • 2.Re4#
      • 1...Sc4
        • 2.Sc2#
      • 1...Sd5
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • K(d);OGATEB,P_SPINP(g),S_FLIGHT,XP(D)::QAB1(F),XP(g)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • K(d);P_SPINP(g),S_FLIGHT,XP(D)::QAB1(F),XP(g)
      • Refutation
        • R(a);XR(C)
    • Try
      • R(C);CHECK
      • Vars
        • K(d);P_SPINP(g),S_FLIGHT,XP(D)::QAB1(F),XP(g)
        • S(c);N_GUARD,P_SPINQ(b),P_SPINS(c)::R1(C),XS(c)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • K(d);P_SPINP(g),S_FLIGHT,XP(D)::QAB1(F),XP(g)
      • Refutation
        • R(e);P_PINS(G),XR(E)
    • Try
      • R(E);CHECK
      • Vars
        • K(d);P_SPINP(g),S_FLIGHT,XP(D)::QAB1(F),XP(g)
        • S(c);N_GUARD,P_SPINQ(b),P_SPINS(c)::R1(E),XS(c)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • Q(F);XP(g)
    • Threat
      • QAB(F)+P(D)
    • Vars
      • Q(b);P_SPINS(c)::QAR2(F)
      • R(a);N_GUARD::R1(C)
      • R(e);N_GUARD::R1(E)
      • S(c);N_GUARD,P_SPINQ(b),SBLOCK::S(B)
      • S(c);N_GUARD,P_SPINQ(b),SBLOCK::S(G)
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