MESON Chess Problem Database

Problem Display
PID: 169201 (8/3Q2B1/5p2/6R1/3N1n2/4k3/1R1n1N2/3K4 w - - 0 1)

Abdullayev, Suleyman

Comm., SuperProblem (Blackjack 5), 2014

8/3Q2B1/5p2/6R1/3N1n2/4k3/1R1n1N2/3K4

#2

7 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sb1
      • 2.Rg3#
    • 1...Sb3
      • 2.Rg3#
    • 1...Sf3
      • 2.Sf5#
    • 1...Sc4
      • 2.Rg3#
  • Tries
    • 1.Rg3+?
      • 1...Sf3
        • 2.Sf5#
        • 2.Rxf3#
      • 1...Kxf2!
    • 1.Qe6+?
      • 1...Kxf2
        • 2.Qe1#
      • 1...Kxd4
        • 2.Bxf6#
      • 1...Se4
        • 2.Qxe4#
      • 1...Sxe6!
    • 1.Qe7+?
      • 1...Kxf2
        • 2.Qe1#
      • 1...Kxd4
        • 2.Qc5#
      • 1...Se4
        • 2.Qxe4#
      • 1...Se6!
  • Keys
    • 1.Qf5!
      • 1...Kxf2
        • 2.Qxf4#
      • 1...Kxd4
        • 2.Qc5#
      • 1...fxg5
        • 2.Sg4#
      • 1...Sb1
        • 2.Qe4#
      • 1...Sf1
        • 2.Qe4#
      • 1...Sb3
        • 2.Qe4#
      • 1...Sf3
        • 2.Qe4#
      • 1...Sc4
        • 2.Qe4#
      • 1...Se4
        • 2.Qxe4#
      • 1...Se2
        • 2.Sc2#
      • 1...Sg2
        • 2.Sc2#
      • 1...Sd3
        • 2.Sc2#
      • 1...Sh3
        • 2.Sc2#
      • 1...Sd5
        • 2.Sc2#
      • 1...Sh5
        • 2.Sc2#
      • 1...Se6
        • 2.Sc2#
      • 1...Sg6
        • 2.Sc2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 4
    • ADDED MATES = 13
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::R(E)
    • S(a);SBLOCK::S(D)
  • Tries
    • Try
      • R(E);CHECK
      • Refutation
        • K(b);P_SPINS(a),S_FLIGHT,XS(C)
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);OGATE,P_SPINS(a),S_FLIGHT,XS(C)::QAB1(F)
        • K(b);P_SPINP(d),S_FLIGHT,XS(D)::B(G),XP(d)
        • S(a);N_GUARD,P_SPINS(a)::QAR1(F),XS(a)
      • Refutation
        • S(c);XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);OGATE,P_SPINS(a),S_FLIGHT,XS(C)::QAB1(F)
        • K(b);OGATEB,P_SPINP(d),S_FLIGHT,XS(D)::QAB1(F)
        • S(a);N_GUARD,P_SPINS(a)::QAR1(F),XS(a)
      • Refutation
        • S(c);P_SPINS(c)
  • Actual
    • Q(F);
    • Vars
      • K(b);P_SPINS(a),S_FLIGHT,XS(C)::QAR2(F),XS(c)
      • K(b);OGATEB,P_SPINP(d),S_FLIGHT,XS(D)::QAB1(F)
      • P(d);XR(E)::S(C)
      • S(a);N_GUARD::QAR1(F)
      • S(a);N_GUARD::QAR1(F),XS(a)
      • S(c);::S(D)
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