MESON Chess Problem Database

Problem Display
PID: 201742 (8/4B3/6K1/8/8/2Q3Pk/4R1nN/8 w - - 0 1)

Abdullayev, Elmar

ChessStar, 2017

8/4B3/6K1/8/8/2Q3Pk/4R1nN/8

#2

6 + 2

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sf4+
      • 2.gxf4#
    • 1...Sh4+
      • 2.gxh4#
  • Tries
    • 1.Qh8+?
      • 1...Sh4+
        • 2.Qxh4#
      • 1...Kxg3!
    • 1.g4+?
      • 1...Se3
        • 2.Qxe3#
      • 1...Kxh2!
  • Keys
    • 1.Qf3!
      • threat
        • 2.Qxg2#
      • 1...Sf4+
        • 2.gxf4#
      • 1...Sh4+
        • 2.gxh4#
      • 1...Kxh2
        • 2.Qxg2#
      • 1...Se1
        • 2.Qg4#
      • 1...Se3
        • 2.g4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(a);CHECK,OGATE::QAR(C)+P(D),XS(a)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • S(a);CHECK,N_GUARD,P_SPINS(a)::QAR1(C),XS(a)
      • Refutation
        • K(b);P-FLIGHT,XP(D)
    • Try
      • P(D);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAR(C),XS(a)
      • Refutation
        • K(b);P-FLIGHT,P_SPINS(a),XS(B)
  • Actual
    • Q(C);
    • Threat
      • QAB1(C),XS(a)
    • Vars
      • S(a);CHECK,OGATE::QAR(C)+P(D),XS(a)
      • K(b);P-FLIGHT,P_SPINS(a),XS(B)::QAR1(C),XS(a)
      • S(a);::QAB1(C)
      • S(a);::QAR(C)+P(D)
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