MESON Chess Problem Database

Problem Display
PID: 262369 (8/Q7/6R1/3K4/4pk2/5P2/8/1B6 w - - 0 1)

Bolotbekov, Sujunbek Ismailovich

Europe Echecs, 1991

8/Q7/6R1/3K4/4pk2/5P2/8/1B6

#2

5 + 2

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Qf7#
    • 1...exf3
      • 2.Qd4#
    • 1...e3
      • 2.Qf7#
  • Tries
    • 1.Kd4?
      • threat
        • 2.Qf7#
      • 1...Kf5
        • 2.Qf7#
      • 1...Kxf3!
    • 1.Kd6?
      • 1...Kf5
        • 2.Qf7#
      • 1...exf3
        • 2.Qd4#
      • 1...e3
        • 2.Qf7#
      • 1...Kxf3!
    • 1.Ke6?
      • 1...exf3
        • 2.Qd4#
      • 1...e3
        • 2.Qf7#
      • 1...Kxf3!
    • 1.Bc2?
      • 1...Kf5
        • 2.Qf7#
      • 1...exf3
        • 2.Qd4#
      • 1...e3
        • 2.Qf7#
      • 1...Kxf3!
    • 1.Rg1?
      • 1...Kf5
        • 2.Qf7#
      • 1...exf3
        • 2.Qd4#
      • 1...e3
        • 2.Qf7#
      • 1...Kxf3!
    • 1.Rg4+?
      • 1...Kf5
        • 2.Qf7#
      • 1...Kxf3!
    • 1.Rg7?
      • 1...Kf5
        • 2.Qf7#
      • 1...exf3
        • 2.Qd4#
      • 1...e3
        • 2.Qf7#
      • 1...Kxf3!
    • 1.Rg8?
      • 1...Kf5
        • 2.Qf7#
      • 1...exf3
        • 2.Qd4#
      • 1...e3
        • 2.Qf7#
      • 1...Kxf3!
    • 1.Qg1?
      • threat
        • 2.Rf6#
      • 1...Kf5
        • 2.Qg4#
        • 2.Qg5#
      • 1...Kxf3!
    • 1.Qf2?
      • threat
        • 2.fxe4#
      • 1...exf3
        • 2.Qd4#
        • 2.Qd2#
      • 1...e3
        • 2.Rg4#
        • 2.Qg3#
      • 1...Kf5!
    • 1.Qe3+?
      • 1...Kf5
        • 2.Bxe4#
        • 2.Qg5#
        • 2.Qxe4#
      • 1...Kxe3!
    • 1.Qd4?
      • threat
        • 2.Qxe4#
      • 1...Kf5
        • 2.Qf6#
        • 2.Qxe4#
      • 1...Kxf3!
    • 1.Qb6?
      • 1...Kf5
        • 2.Qf6#
      • 1...exf3
        • 2.Qd4#
      • 1...e3
        • 2.Qf6#
      • 1...Kxf3!
    • 1.Qa3?
      • 1...exf3
        • 2.Qc1#
      • 1...e3
        • 2.Qf8#
      • 1...Kf5!
  • Keys
    • 1.Rg2!
      • 1...Kxf3
        • 2.Qf2#
      • 1...Kf5
        • 2.Qf7#
      • 1...exf3
        • 2.Qd4#
      • 1...e3
        • 2.Qf7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);N_GUARD,P-FLIGHT,P_SPINP(a)::QAR2(E)
    • P(a);OGATEB,SBLOCK,XP(B)::QAR2(E)
    • P(a);SBLOCK::QAR(E)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Threat
        • QAR(E)
      • Vars
        • K(b);P-FLIGHT,P_SPINP(a)::QAR2(E)
      • Refutation
        • K(b);P-FLIGHT,XP(B)
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(b);N_GUARD,P-FLIGHT,P_SPINP(a)::QAR2(E)
        • P(a);OGATEB,SBLOCK,XP(B)::QAR2(E)
        • P(a);SBLOCK::QAR(E)
      • Refutation
        • K(b);P-FLIGHT,XP(B)
    • Try
      • K(C);S_FLIGHT
      • Vars
        • P(a);OGATEB,SBLOCK,XP(B)::QAR2(E)
        • P(a);SBLOCK::QAR(E)
      • Refutation
        • K(b);P-FLIGHT,XP(B)
    • Try
      • B(A);
      • Vars
        • K(b);N_GUARD,P-FLIGHT,P_SPINP(a)::QAR2(E)
        • P(a);OGATEB,SBLOCK,XP(B)::QAR2(E)
        • P(a);SBLOCK::QAR(E)
      • Refutation
        • K(b);P-FLIGHT,XP(B)
    • Try
      • R(D);
      • Vars
        • K(b);N_GUARD,P-FLIGHT,P_SPINP(a)::QAR2(E)
        • P(a);OGATEB,SBLOCK,XP(B)::QAR2(E)
        • P(a);SBLOCK::QAR(E)
      • Refutation
        • K(b);P-FLIGHT,XP(B)
    • Try
      • R(D);CHECK
      • Vars
        • K(b);N_GUARD,P-FLIGHT,P_SPINP(a)::QAR2(E)
      • Refutation
        • K(b);P-FLIGHT,XP(B)
    • Try
      • R(D);
      • Vars
        • K(b);N_GUARD,P-FLIGHT,P_SPINP(a)::QAR2(E)
        • P(a);OGATEB,SBLOCK,XP(B)::QAR2(E)
        • P(a);SBLOCK::QAR(E)
      • Refutation
        • K(b);P-FLIGHT,XP(B)
    • Try
      • R(D);
      • Vars
        • K(b);N_GUARD,P-FLIGHT,P_SPINP(a)::QAR2(E)
        • P(a);OGATEB,SBLOCK,XP(B)::QAR2(E)
        • P(a);SBLOCK::QAR(E)
      • Refutation
        • K(b);P-FLIGHT,XP(B)
    • Try
      • Q(E);
      • Threat
        • R(D)
      • Refutation
        • K(b);P-FLIGHT,XP(B)
    • Try
      • Q(E);
      • Threat
        • QAR(E)+P(B),XP(a)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(a)
    • Try
      • Q(E);CHECK
      • Refutation
        • K(b);S_FLIGHT,XQ(E)
    • Try
      • Q(E);P_PINP(a)
      • Threat
        • QAR1(E),XP(a)
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT,XP(B)
    • Try
      • Q(E);
      • Vars
        • K(b);N_GUARD,P-FLIGHT,P_SPINP(a)::QAR1(E)
        • P(a);OGATEB,SBLOCK,XP(B)::QAR2(E)
        • P(a);SBLOCK::QAR2(E)
      • Refutation
        • K(b);P-FLIGHT,XP(B)
    • Try
      • Q(E);
      • Vars
        • P(a);N_GUARD,SBLOCK,XP(B)::QAB(E)
        • P(a);SBLOCK::QAR(E)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(a)
  • Actual
    • R(D);
    • Vars
      • K(b);OGATEB,P-FLIGHT,XP(B)::QAR1(E)
      • K(b);N_GUARD,P-FLIGHT,P_SPINP(a)::QAR2(E)
      • P(a);OGATEB,SBLOCK,XP(B)::QAR2(E)
      • P(a);SBLOCK::QAR(E)
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Developed and maintained by Brian Stephenson.
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