MESON Chess Problem Database

Problem Display
PID: 69595 (2Q5/8/2B5/pq6/k7/ppP1p3/n7/4K3 w - - 0 1)

Berkovec, Jan

Tyden rozhlasu, 1941

2Q5/8/2B5/pq6/k7/ppP1p3/n7/4K3

#2

4 + 7

5584 Galerie Ceskoslovenskych Skladatelu 01 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc6
      • 2.Qxc6#
    • 1...Sc1
      • 2.Qg4#
  • Tries
    • 1.Qa6?
      • threat
        • 2.Bxb5#
        • 2.Qxb5#
      • 1...Qxc6
        • 2.Qxc6#
      • 1...b2
        • 2.Qxb5#
      • 1...Sxc3!
    • 1.Qb7?
      • threat
        • 2.Bxb5#
        • 2.Qxb5#
      • 1...Qxc6
        • 2.Qxc6#
      • 1...b2
        • 2.Qxb5#
      • 1...Sxc3!
  • Keys
    • 1.Qd7!
      • threat
        • 2.Bxb5#
      • 1...Qxc6
        • 2.Qxc6#
      • 1...Sxc3
        • 2.Qd4#
      • 1...b2
        • 2.Qd1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • Q(g);N_SPINQ(g),OGATE,XB(C)::QAB(D),XQ(g)
    • S(a);N_GUARD::QAR(D)
  • Tries
    • Try
      • Q(D);P_PINP(f)
      • Threat
        • DUALS(2)
      • Vars
        • Q(g);N_SPINQ(g),OGATE,XB(C)::QAB(D),XQ(g)
        • P(c);::QAB1(D),XQ(g)
      • Refutation
        • S(a);XP(B)
    • Try
      • Q(D);
      • Threat
        • DUALS(2)
      • Vars
        • Q(g);N_SPINQ(g),OGATE,XB(C)::QAB(D),XQ(g)
        • P(c);::QAB1(D),XQ(g)
      • Refutation
        • S(a);XP(B)
  • Actual
    • Q(D);
    • Threat
      • B(C),XQ(g)
    • Vars
      • Q(g);OGATE,XB(C)::QAB(D),XQ(g)
      • S(a);N_GUARD,XP(B)::QAR(D)
      • P(c);OGATEB::QAB(D)
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