MESON Chess Problem Database

Problem Display
PID: 260871 (8/3Q3B/1nb1pp2/p2p4/p1Pp2p1/B4P2/3k1P2/2R1NK2 w - - 0 1)

Gockel, Hubert

3rd Prize, Neue Zurcher Zeitung, 2012

8/3Q3B/1nb1pp2/p2p4/p1Pp2p1/B4P2/3k1P2/2R1NK2

#2

9 + 10

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...gxf3
      • 2.Sxf3#
    • 1...dxc4
      • 2.Qxd4#
  • Tries
    • 1.Qa7?
      • threat
        • 2.Qxa5#
      • 1...Sxc4
        • 2.Qxd4#
      • 1...dxc4!
    • 1.Qg7?
      • threat
        • 2.Qh6#
      • 1...f5
        • 2.Qxd4#
      • 1...Sxc4!
    • 1.fxg4?
      • threat
        • 2.Sf3#
      • 1...dxc4
        • 2.Qxd4#
      • 1...f5!
  • Keys
    • 1.Qxe6!
      • threat
        • 2.Qe2#
      • 1...gxf3
        • 2.Sxf3#
      • 1...d3
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • P(d);XP(F)::S(B),XP(d)
    • P(f);OGATE,P_SPINP(c),XP(G)::QAR2(H),XP(c)
  • Tries
    • Try
      • Q(H);
      • Threat
        • QAB(H),XP(e)
      • Vars
        • S(g);OGATE,XP(G)::QAR2(H),XP(c)
      • Refutation
        • P(f);XP(G)
    • Try
      • Q(H);
      • Threat
        • QAB(H)
      • Vars
        • P(j);OGATE::QAR2(H),XP(c)
      • Refutation
        • S(g);XP(G)
    • Try
      • P(F);XP(d)
      • Threat
        • S(B)
      • Vars
        • P(f);OGATE,P_SPINP(c),XP(G)::QAR2(H),XP(c)
      • Refutation
        • P(j);
  • Actual
    • Q(H);XP(i)
    • Threat
      • QAR1(H)
    • Vars
      • P(d);XP(F)::S(B),XP(d)
      • P(c);N_GUARD::QAB1(H)
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