MESON Chess Problem Database

Problem Display
PID: 15681 (7Q/8/8/8/8/5K2/2p5/3kB3 w - - 0 1)

Gulyaev, Aleksandr Pavlovich (aka Grin, AP)

Amirov MT, 1987

7Q/8/8/8/8/5K2/2p5/3kB3

#2

3 + 2

3296 Shakhmatny zadachi miniaturi 1987
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kc1
      • 2.Qa1#
  • Tries
    • 1.Qd4+?
      • 1...Kc1
        • 2.Qa1#
      • 1...Kxe1!
    • 1.Qe5?
      • 1...Kc1
        • 2.Qa1#
      • 1...c1Q
        • 2.Qe2#
      • 1...c1B
        • 2.Qe2#
      • 1...c1R
        • 2.Qe2#
      • 1...c1S!
    • 1.Qh2?
      • threat
        • 2.Qd2#
      • 1...Kxe1
        • 2.Qe2#
      • 1...c1Q
        • 2.Qe2#
      • 1...c1B
        • 2.Qe2#
      • 1...Kc1!
  • Keys
    • 1.Qb2!
      • 1...Kxe1
        • 2.Qc1#
      • 1...c1Q
        • 2.Qe2#
      • 1...c1S
        • 2.Qd2#
      • 1...c1B
        • 2.Qe2#
      • 1...c1R
        • 2.Qd2#
        • 2.Qe2#

Anticipated by 153711(1947)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • K(a);P-FLIGHT::QAR2(C)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
      • Refutation
        • K(a);P-FLIGHT,XB(A)
    • Try
      • Q(C);
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
        • P(b);SBLOCK::QAB1(C)
      • Refutation
        • P(b);
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • K(a);P-FLIGHT,XB(A)::QAR1(C)
        • P(b);SBLOCK::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(a);P-FLIGHT,XB(A)::QAR2(C)
      • P(b);OGATE,SBLOCK::QAB1(C)
      • P(b);OGATE::QAR1(C)
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