MESON Chess Problem Database

Problem Display
PID: 163614 (8/8/8/7R/Q3K3/2p5/2p5/1k1N4 w - - 0 1)

Kuligin, Nikolai Volodimirovich

Sachmatija, 2005

8/8/8/7R/Q3K3/2p5/2p5/1k1N4

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...c1R
      • 2.Rb5#
  • Tries
    • 1.Qxc2+?
      • 1...Ka1
        • 2.Ra5#
      • 1...Kxc2!
    • 1.Qb3+?
      • 1...Ka1
        • 2.Ra5#
      • 1...Kc1!
    • 1.Qb4+?
      • 1...Ka1
        • 2.Ra5#
      • 1...Ka2
        • 2.Ra5#
      • 1...Kc1!
  • Keys
    • 1.Rh2!
      • 1...Kc1
        • 2.Qxc2#
        • 2.Qa1#
      • 1...cxd1Q
        • 2.Qxd1#
      • 1...cxd1S
        • 2.Qxd1#
      • 1...cxd1B
        • 2.Qxd1#
      • 1...cxd1R
        • 2.Qxd1#
      • 1...c1Q
        • 2.Qa2#
      • 1...c1S
        • 2.Sxc3#
      • 1...c1B
        • 2.Sxc3#
        • 2.Qa2#
      • 1...c1R
        • 2.Qa2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • P(b);SBLOCK::R(D)
  • Tries
    • Try
      • Q(B);CHECK,XP(b)
      • Vars
        • K(a);P-FLIGHT::R(D)
      • Refutation
        • K(a);S_FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::R(D)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::R(D)
        • K(a);S_FLIGHT::R(D)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • R(D);
    • Vars
      • P(b);OGATE,XS(A)::QAR2(B),XQ(b)
      • P(b);OGATE,XS(A)::QAR2(B),XS(b)
      • P(b);OGATE,XS(A)::QAR2(B),XB(b)
      • P(b);OGATE,XS(A)::QAR2(B),XR(b)
      • P(b);SBLOCK::QAB1(B)
      • P(b);SBLOCK::S(A),XP(c)
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