MESON Chess Problem Database

Problem Display
PID: 235503 (8/8/6B1/8/5KQ1/8/Rp1p4/2k5 w - - 0 1)

Dikusarov, Andrey Nikolayovich

64 Shakhmatnoe obozrenie, 1981

8/8/6B1/8/5KQ1/8/Rp1p4/2k5

#2

4 + 3

5454 Near Snap 2021
15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...b1S
      • 2.Rc2#
    • 1...b1R
      • 2.Rc2#
  • Tries
    • 1.Bc2?
      • threat
        • 2.Qd1#
      • 1...d1Q
        • 2.Qxd1#
      • 1...d1S
        • 2.Qxd1#
      • 1...d1B
        • 2.Qxd1#
      • 1...d1R
        • 2.Qxd1#
      • 1...Kxc2!
    • 1.Qg2?
      • 1...Kd1
        • 2.Qf1#
      • 1...b1Q
        • 2.Qxd2#
      • 1...b1B
        • 2.Qxd2#
      • 1...b1R
        • 2.Qxd2#
      • 1...d1Q
        • 2.Qxb2#
      • 1...d1S
        • 2.Qc2#
      • 1...d1B
        • 2.Qxb2#
      • 1...d1R
        • 2.Qxb2#
        • 2.Qc2#
      • 1...b1S!
  • Keys
    • 1.Qe2!
      • 1...b1Q
        • 2.Qxd2#
      • 1...b1S
        • 2.Rc2#
      • 1...b1B
        • 2.Qxd2#
      • 1...b1R
        • 2.Rc2#
        • 2.Qxd2#
      • 1...d1Q
        • 2.Qxb2#
      • 1...d1S
        • 2.Qc2#
      • 1...d1B
        • 2.Qxb2#
        • 2.Qe3#
      • 1...d1R
        • 2.Qxb2#
        • 2.Qc2#

Anticipated by 133487(1958)

There are these versions: 67367

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • P(b);OGATE,SBLOCK::R1(A)
  • Tries
    • Try
      • B(D);
      • Threat
        • QAR1(C)
      • Vars
        • P(c);::QAR1(C),XQ(c)
        • P(c);::QAR1(C),XS(c)
        • P(c);::QAR1(C),XB(c)
        • P(c);::QAR1(C),XR(c)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b),XB(D)
    • Try
      • Q(C);
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
        • P(b);::QAB1(C),XP(c)
        • P(c);OGATE,SBLOCK::QAB1(C),XP(b)
        • P(c);OGATE::QAR1(C)
      • Refutation
        • P(b);
  • Actual
    • Q(C);
    • Vars
      • P(b);::QAB1(C),XP(c)
      • P(b);OGATE,SBLOCK::R1(A)
      • P(c);OGATE,SBLOCK::QAB1(C),XP(b)
      • P(c);OGATE::QAR1(C)
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