MESON Chess Problem Database

Problem Display
PID: 172336 (8/8/8/8/8/2K1N1Q1/4k3/4Nr2 w - - 0 1)

Andreev, Aleksandr Grigorevich

Vecherni Krasnodar, 1996

8/8/8/8/8/2K1N1Q1/4k3/4Nr2

#2

4 + 2

5454 Near Snap 2018
6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qf3+?
      • 1...Kxe1
        • 2.Sc2#
        • 2.Sg2#
        • 2.Qxf1#
      • 1...Rxf3!
  • Keys
    • 1.Sd3!
      • 1...Rc1+
        • 2.Sxc1#
      • 1...Rf3
        • 2.Qe1#
      • 1...Rf2
        • 2.Qxf2#
      • 1...Ra1
        • 2.Sf4#
        • 2.Qf2#
      • 1...Rb1
        • 2.Sf4#
        • 2.Qf2#
      • 1...Rd1
        • 2.Sf4#
        • 2.Qf2#
      • 1...Re1
        • 2.Sf4#
        • 2.Qf2#
      • 1...Rg1
        • 2.Sf4#
        • 2.Qf2#
      • 1...Rh1
        • 2.Sf4#
        • 2.Qf2#
      • 1...Rf4
        • 2.Sc1#
        • 2.Sxf4#
      • 1...Rf5
        • 2.Sc1#
      • 1...Rf6
        • 2.Sc1#
      • 1...Rf7
        • 2.Sc1#
      • 1...Rf8
        • 2.Sc1#

Anticipated by 96534(1975)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);CHECK
      • Refutation
        • R(a);P_PINS(C),XQ(D)
  • Actual
    • S(A);
    • Vars
      • R(a);CHECK,N_GUARD::S(A),XR(a)
      • R(a);N_GUARD,SBLOCK::QAR1(D)
      • R(a);N_GUARD::QAR1(D),XR(a)
      • R(a);N_GUARD::S(A)
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