MESON Chess Problem Database

Problem Display
PID: 165313 (8/8/1n1Q4/1k6/8/R2K4/P1P5/8 w - - 0 1)

Abdullayev, Elmar

Sem Shakhmatnikh not, 2017

8/8/1n1Q4/1k6/8/R2K4/P1P5/8

#2

5 + 2

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Sd5
      • 2.c4#
    • 1...Sd7
      • 2.c4#
    • 1...Sa8
      • 2.c4#
    • 1...Sc8
      • 2.c4#
  • Tries
    • 1.Kd4?
      • threat
        • 2.Qc5#
      • 1...Sd7
        • 2.c4#
      • 1...Sa4!
    • 1.Rb3+?
      • 1...Ka4
        • 2.Qa3#
        • 2.Qb4#
      • 1...Ka6
        • 2.Qxb6#
      • 1...Ka5!
    • 1.Ra6?
      • threat
        • 2.Qxb6#
      • 1...Sa4
        • 2.c4#
      • 1...Sc4
        • 2.a4#
      • 1...Sd5
        • 2.a4#
        • 2.c4#
      • 1...Sd7
        • 2.a4#
        • 2.c4#
      • 1...Sa8
        • 2.a4#
        • 2.c4#
      • 1...Sc8
        • 2.a4#
        • 2.c4#
      • 1...Kxa6!
    • 1.Ra8?
      • 1...Sa4
        • 2.c4#
      • 1...Sc4
        • 2.a4#
      • 1...Sd5
        • 2.a4#
        • 2.c4#
      • 1...Sd7
        • 2.a4#
        • 2.c4#
      • 1...Sc8
        • 2.a4#
        • 2.c4#
      • 1...Sxa8!
    • 1.Qd5+?
      • 1...Kb4
        • 2.Qa5#
      • 1...Sxd5!
  • Keys
    • 1.Ra7!
      • 1...Sa4
        • 2.c4#
      • 1...Sc4
        • 2.a4#
      • 1...Sd5
        • 2.a4#
        • 2.c4#
      • 1...Sd7
        • 2.a4#
        • 2.c4#
      • 1...Sa8
        • 2.a4#
        • 2.c4#
      • 1...Sc8
        • 2.a4#
        • 2.c4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • S(b);N_GUARD::P(B)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Threat
        • QAR1(E)
      • Vars
        • S(b);N_GUARD::P(B)
      • Refutation
        • S(b);
    • Try
      • R(C);CHECK
      • Vars
        • K(a);P_SPINS(b),S_FLIGHT::QAR1(E),XS(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(C);
      • Threat
        • QAR1(E),XS(b)
      • Vars
        • S(b);N_GUARD::P(B)
        • S(b);N_GUARD::P(A)
      • Refutation
        • K(a);P_SPINS(b),S_FLIGHT,XR(C)
    • Try
      • R(C);
      • Vars
        • S(b);N_GUARD::P(B)
        • S(b);N_GUARD::P(A)
      • Refutation
        • S(b);XR(C)
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAB1(E)
      • Refutation
        • S(b);XQ(E)
  • Actual
    • R(C);
    • Vars
      • S(b);N_GUARD::P(B)
      • S(b);N_GUARD::P(A)
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