MESON Chess Problem Database

Problem Display
PID: 140832 (KQ4b1/P3NB2/3p4/2kp4/3r1N2/Pp6/1P3R2/4b1B1 w - - 0 1)

Sibinovski, Zoran

Liga Problemista, 1986/2

KQ4b1/P3NB2/3p4/2kp4/3r1N2/Pp6/1P3R2/4b1B1

#2

10 + 7

6490 yacpdb 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Rc2#
    • 1...Rd2
      • 2.Qb4#
    • 1...Rd3
      • 2.Rc2#
    • 1...Ra4
      • 2.Rc2#
    • 1...Rb4
      • 2.Rc2#
    • 1...Rc4
      • 2.Se6#
    • 1...Re4
      • 2.Rc2#
    • 1...Rxf4
      • 2.Rc2#
  • Tries
    • 1.Sd3+?
      • 1...Rxd3
        • 2.Rc2#
      • 1...Kc4!
    • 1.Be8?
      • threat
        • 2.Qc7#
        • 2.Qb5#
      • 1...Kc4
        • 2.Qc7#
        • 2.Qb5#
        • 2.Qc8#
      • 1...Rxf4
        • 2.Rc2#
      • 1...Rd1
        • 2.Rc2#
      • 1...Rd2
        • 2.Qb4#
      • 1...Rd3
        • 2.Rc2#
      • 1...Ra4
        • 2.Rc2#
      • 1...Rb4
        • 2.Rc2#
      • 1...Re4
        • 2.Rc2#
      • 1...Ba5
        • 2.Qb5#
      • 1...Rc4!
    • 1.Rc2+?
      • 1...Bc3
        • 2.Rxc3#
        • 2.Qb4#
      • 1...bxc2!
    • 1.Qb6+?
      • 1...Kc4
        • 2.Qc6#
      • 1...Kxb6!
    • 1.a4?
      • threat
        • 2.Qb5#
      • 1...Kc4
        • 2.Qb5#
      • 1...Rxa4
        • 2.Rc2#
      • 1...Rxf4
        • 2.Rc2#
      • 1...Rd1
        • 2.Rc2#
      • 1...Rd3
        • 2.Rc2#
      • 1...Rb4
        • 2.Rc2#
      • 1...Re4
        • 2.Rc2#
      • 1...Rc4
        • 2.Se6#
      • 1...Rd2!
  • Keys
    • 1.Qb7!
      • threat
        • 2.Qc6#
      • 1...Kc4
        • 2.Qc6#
      • 1...Rxf4
        • 2.Rc2#
      • 1...Rd1
        • 2.Rc2#
      • 1...Rd2
        • 2.Qb4#
      • 1...Rd3
        • 2.Rc2#
      • 1...Ra4
        • 2.Rc2#
      • 1...Rb4
        • 2.Rc2#
      • 1...Re4
        • 2.Rc2#
      • 1...Rc4
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(c);::B(A)+R(C),DCHECK
    • R(c);N_GUARD,S_CUTB(a)::QAB1(J)
    • R(c);P_PINP(F)::B(A)+R(C),DCHECK
    • R(c);SBLOCK::S(E)
    • R(c);XS(E)::B(A)+R(C),DCHECK
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • R(c);XS(E)::B(A)+R(C),DCHECK
      • Refutation
        • K(d);P-FLIGHT,P_SPINP(e)
    • Try
      • B(H);
      • Threat
        • DUALS(2)
      • Vars
        • R(c);XS(E)::B(A)+R(C),DCHECK
        • R(c);::B(A)+R(C),DCHECK
        • R(c);N_GUARD,S_CUTB(a)::QAB1(J)
        • R(c);P_PINP(F)::B(A)+R(C),DCHECK
        • B(a);::QAR1(J)
      • Refutation
        • R(c);
    • Try
      • R(C);CHECK,P_PINR(c)
      • Refutation
        • P(b);XR(C)
    • Try
      • Q(J);CHECK
      • Vars
        • K(d);P-FLIGHT,P_SPINP(e)::QAR2(J)
      • Refutation
        • K(d);S_FLIGHT,XQ(J)
    • Try
      • P(D);
      • Threat
        • QAR1(J)
      • Vars
        • K(d);P-FLIGHT,P_SPINP(e)::QAB1(J)
        • R(c);P_PINP(F),XP(D)::B(A)+R(C),DCHECK
        • R(c);XS(E)::B(A)+R(C),DCHECK
        • R(c);::B(A)+R(C),DCHECK
        • R(c);SBLOCK::S(E)
      • Refutation
        • R(c);
  • Actual
    • Q(J);
    • Threat
      • QAR1(J)
    • Vars
      • K(d);P-FLIGHT,P_SPINP(e)::QAR2(J)
      • R(c);XS(E)::B(A)+R(C),DCHECK
      • R(c);::B(A)+R(C),DCHECK
      • R(c);N_GUARD,S_CUTB(a)::QAB1(J)
      • R(c);P_PINP(F)::B(A)+R(C),DCHECK
      • R(c);SBLOCK::S(E)
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