MESON Chess Problem Database

Problem Display
PID: 150240 (8/8/R7/8/1nK5/b7/n1Q1p3/k3N1R1 w - - 0 1)

Abdullayev, Suleyman

Problemist Ukraini, 2012

8/8/R7/8/1nK5/b7/n1Q1p3/k3N1R1

#2

5 + 5

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Qxc1#
  • Tries
    • 1.Rxa3?
      • threat
        • 2.Qc1#
      • 1...Sd3
        • 2.Rxa2#
        • 2.Qxa2#
      • 1...Sxc2!
    • 1.Qb2+?
      • 1...Bxb2
        • 2.Sc2#
      • 1...Kxb2!
  • Keys
    • 1.Kb3!
      • 1...Sc1+
        • 2.Qxc1#
      • 1...Sxc2
        • 2.Sxc2#
      • 1...Sxa6
        • 2.Qxa2#
      • 1...Bc1
        • 2.Qxc1#
      • 1...Bb2
        • 2.Qxb2#
      • 1...Sc3
        • 2.Qb2#
      • 1...Sd3
        • 2.Qxa2#
      • 1...Sd5
        • 2.Qxa2#
      • 1...Sc6
        • 2.Qxa2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • B(d);N_GUARD,P_SPINS(b)::QAR2(C),XB(d)
  • Tries
    • Try
      • R(E);P_PINS(b),XB(d)
      • Threat
        • QAR2(C)
      • Refutation
        • S(e);XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • B(d);P_SPINS(b),SBLOCK,XQ(C)::R(B)+S(A),DCHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(C)
  • Actual
    • K(D);S_FLIGHT
    • Vars
      • S(b);CHECK,N_GUARD,P_SPINB(d)::QAR2(C),XS(b)
      • S(e);XQ(C)::R(B)+S(A),DCHECK,XS(e)
      • S(e);N_GUARD,XR(E)::QAR1(C),XS(b)
      • B(d);N_GUARD,P_SPINS(b)::QAR2(C),XB(d)
      • B(d);N_GUARD,P_SPINS(b)::QAB1(C),XB(d)
      • S(b);P_SPINB(d)::QAB1(C)
      • S(e);N_GUARD::QAR1(C),XS(b)
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