MESON Chess Problem Database

Problem Display
PID: 109795 (KN3B2/1R6/1r6/1kr3q1/bp6/2P5/1NP5/3Q4 w - - 0 1)

Zuk, Henryk

Szachy, 1988-1989

KN3B2/1R6/1r6/1kr3q1/bp6/2P5/1NP5/3Q4

#2

8 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qa1?
      • threat
        • 2.Qxa4#
      • 1...Ka5
        • 2.Qxa4#
      • 1...Bxc2
        • 2.Qa6#
      • 1...Bb3
        • 2.Qa6#
      • 1...Rxb7!
    • 1.Qd4?
      • threat
        • 2.Qxb4#
      • 1...bxc3
        • 2.Qxa4#
      • 1...Rc4
        • 2.Qxb6#
      • 1...Qf4
        • 2.Qxc5#
      • 1...Qh4
        • 2.Qxc5#
      • 1...Qg4
        • 2.Qxc5#
      • 1...b3
        • 2.Qxa4#
        • 2.Qb4#
      • 1...Ka5!
    • 1.Qd7+?
      • 1...Ka5
        • 2.Qxa4#
      • 1...Rc6!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Qxb6#
      • 1...Ka5
        • 2.Qxb6#
      • 1...Rxb7
        • 2.Qa6#
      • 1...Qf6
        • 2.Qxc5#
      • 1...Qh6
        • 2.Qxc5#
      • 1...Qd8
        • 2.Qxc5#
      • 1...Qg6
        • 2.Qxc5#
      • 1...Rc6
        • 2.Qxb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A),XB(a)
      • Vars
        • K(c);N_SPINR(f),P-FLIGHT,P_SPINB(a)::QAR1(A),XB(a)
        • B(a);OGATE,XP(C)::QAB1(A)
        • B(a);OGATE::QAB1(A)
      • Refutation
        • R(f);N_SPINR(f),XR(E)
    • Try
      • Q(A);
      • Threat
        • QAR1(A),XP(b)
      • Vars
        • P(b);OGATE,XP(D)::QAB1(A),XB(a)
        • R(d);OGATE::QAR1(A),XR(f)
        • Q(e);N_GUARD::QAR1(A),XR(d)
      • Refutation
        • K(c);N_SPINR(f),P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);N_SPINR(f),OGATE,P-FLIGHT::QAR1(A),XB(a)
      • Refutation
        • R(d);
  • Actual
    • Q(A);
    • Threat
      • QAR1(A),XR(f)
    • Vars
      • K(c);N_SPINR(f),P-FLIGHT::QAB1(A),XR(f)
      • R(f);N_SPINR(f),OGATE,XR(E)::QAB1(A)
      • Q(e);N_GUARD::QAR1(A),XR(d)
      • Q(e);N_GUARD,P_PINS(G)::QAR1(A),XR(d)
      • R(d);OGATE::QAR1(A),XP(b)
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