MESON Chess Problem Database

Problem Display
PID: 110548 (4R2Q/1Rp5/2k5/2B5/1K6/8/8/8 w - - 0 1)

Basalaja, G

34. szovjet bajnoksag, 1967

4R2Q/1Rp5/2k5/2B5/1K6/8/8/8

#2

5 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qh1#
  • Tries
    • 1.Rb5?
      • 1...Kd5
        • 2.Qh1#
      • 1...Kd7!
    • 1.Rb6+?
      • 1...Kd5
        • 2.Re5#
        • 2.Qd4#
        • 2.Qe5#
        • 2.Qh1#
        • 2.Qh5#
        • 2.Qg8#
      • 1...Kd7
        • 2.Re7#
        • 2.Rd8#
      • 1...cxb6!
    • 1.Ra7?
      • 1...Kd5
        • 2.Qh1#
      • 1...Kd7!
    • 1.Rxc7+?
      • 1...Kd5
        • 2.Re5#
        • 2.Qd4#
        • 2.Qe5#
        • 2.Qh1#
        • 2.Qh5#
        • 2.Qg8#
      • 1...Kxc7!
    • 1.Rbb8?
      • 1...Kd5
        • 2.Qh1#
      • 1...Kd7!
    • 1.Re1?
      • 1...Kd5
        • 2.Qh1#
      • 1...Kd7
        • 2.Qe8#
      • 1...Kxb7!
    • 1.Re2?
      • 1...Kd5
        • 2.Qh1#
      • 1...Kd7
        • 2.Qe8#
      • 1...Kxb7!
    • 1.Re3?
      • 1...Kd5
        • 2.Qh1#
      • 1...Kd7
        • 2.Qe8#
      • 1...Kxb7!
    • 1.Re5?
      • 1...Kd7
        • 2.Qe8#
      • 1...Kxb7!
    • 1.Re6+?
      • 1...Kd5
        • 2.Qe5#
      • 1...Kd7
        • 2.Qe8#
      • 1...Kxb7!
    • 1.Re7?
      • threat
        • 2.Qh1#
      • 1...Kd5
        • 2.Qh1#
      • 1...Kxb7!
    • 1.Reb8?
      • 1...Kd7
        • 2.Qe8#
      • 1...Kd5!
    • 1.Qe5?
      • threat
        • 2.Rxc7#
      • 1...Kd7
        • 2.Rxc7#
        • 2.Qe6#
      • 1...Kxb7!
    • 1.Qf6+?
      • 1...Kd5
        • 2.Re5#
        • 2.Qf3#
        • 2.Qe6#
      • 1...Kd7
        • 2.Rd8#
        • 2.Qe6#
      • 1...Kxb7!
    • 1.Qg7?
      • 1...Kd5
        • 2.Qg2#
        • 2.Qd7#
      • 1...Kxb7!
    • 1.Qh3?
      • 1...Kd5
        • 2.Qg2#
        • 2.Qe6#
        • 2.Qd7#
        • 2.Qh1#
        • 2.Qf3#
      • 1...Kxb7!
    • 1.Qh6+?
      • 1...Kd5
        • 2.Qh1#
        • 2.Qe6#
      • 1...Kd7
        • 2.Qe6#
      • 1...Kxb7!
    • 1.Qh7?
      • 1...Kd5
        • 2.Qe4#
        • 2.Qh1#
        • 2.Qd7#
      • 1...Kxb7!
    • 1.Qg8?
      • 1...Kd7
        • 2.Qe6#
      • 1...Kxb7!
  • Keys
    • 1.Qa1!
      • 1...Kd5
        • 2.Qh1#
      • 1...Kxb7
        • 2.Qa8#
      • 1...Kd7
        • 2.Qa4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB(E)
  • Tries
    • Try
      • R(C);
      • Vars
        • K(a);S_FLIGHT::QAB(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);CHECK
      • Refutation
        • P(b);XR(C)
    • Try
      • R(C);
      • Vars
        • K(a);S_FLIGHT::QAB(E)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • R(C);CHECK,XP(b)
      • Refutation
        • K(a);P-FLIGHT,XR(C)
    • Try
      • R(C);
      • Vars
        • K(a);S_FLIGHT::QAB(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(D);
      • Vars
        • K(a);S_FLIGHT::QAB(E)
        • K(a);P_SPINP(b),S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • R(D);
      • Vars
        • K(a);S_FLIGHT::QAB(E)
        • K(a);P_SPINP(b),S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • R(D);
      • Vars
        • K(a);S_FLIGHT::QAB(E)
        • K(a);P_SPINP(b),S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • R(D);
      • Vars
        • K(a);P_SPINP(b),S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • R(D);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(E)
        • K(a);P_SPINP(b),S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • R(D);
      • Threat
        • QAB(E)
      • Vars
        • K(a);S_FLIGHT::QAB(E)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT,XR(C)
    • Try
      • R(D);
      • Vars
        • K(a);P_SPINP(b),S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Threat
        • R1(C),XP(b)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • Q(E);CHECK
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • Q(E);
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT,XR(C)
    • Try
      • Q(E);
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);P_SPINP(b),S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • Q(E);
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT,XR(C)
    • Try
      • Q(E);
      • Vars
        • K(a);P_SPINP(b),S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
  • Actual
    • Q(E);
    • Vars
      • K(a);S_FLIGHT::QAB(E)
      • K(a);OGATEB,S_FLIGHT,XR(C)::QAB1(E)
      • K(a);P_SPINP(b),S_FLIGHT::QAB(E)
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Developed and maintained by Brian Stephenson.
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