MESON Chess Problem Database

Problem Display
PID: 219866 (3r4/2p2Q2/N1P5/3n4/P3N3/1k4p1/R7/K4B2 w - - 0 1)

Kashcheev, Niktopolion Pavlovich

Land og Folk, 1969

(First published on Sun Mar 30 1969)

3r4/2p2Q2/N1P5/3n4/P3N3/1k4p1/R7/K4B2

#2

8 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ra8
      • 2.Qxd5#
    • 1...Rb8
      • 2.Qxd5#
    • 1...Rc8
      • 2.Qxd5#
    • 1...Re8
      • 2.Qxd5#
    • 1...Rf8
      • 2.Qxd5#
    • 1...Rg8
      • 2.Qxd5#
    • 1...Rh8
      • 2.Qxd5#
  • Tries
    • 1.Qf2?
      • threat
        • 2.Qb2#
        • 2.Qc2#
      • 1...Se3
        • 2.Qb2#
      • 1...Sb4
        • 2.Sac5#
        • 2.Qb2#
      • 1...gxf2!
    • 1.Qf3+?
      • 1...Sc3
        • 2.Sec5#
        • 2.Qxc3#
      • 1...Se3!
    • 1.Qf6?
      • threat
        • 2.Sd2#
        • 2.Sec5#
        • 2.Qb2#
      • 1...Sc3
        • 2.Sec5#
        • 2.Qxc3#
      • 1...Se3
        • 2.Sec5#
        • 2.Qb2#
        • 2.Qc3#
      • 1...Sb4
        • 2.Sec5#
        • 2.Sac5#
        • 2.Qb2#
        • 2.Qc3#
      • 1...Sf4
        • 2.Sec5#
        • 2.Qb2#
        • 2.Qc3#
      • 1...Sb6
        • 2.Sec5#
        • 2.Qb2#
        • 2.Qc3#
      • 1...Se7
        • 2.Sec5#
        • 2.Qb2#
        • 2.Qc3#
      • 1...Sxf6!
    • 1.Qg7?
      • threat
        • 2.Sd2#
        • 2.Sec5#
        • 2.Qb2#
      • 1...Sc3
        • 2.Sec5#
        • 2.Qxc3#
      • 1...Se3
        • 2.Sec5#
        • 2.Qb2#
        • 2.Qc3#
      • 1...Sb4
        • 2.Sec5#
        • 2.Sac5#
        • 2.Qb2#
        • 2.Qc3#
      • 1...Sf4
        • 2.Sec5#
        • 2.Qb2#
        • 2.Qc3#
      • 1...Sb6
        • 2.Sec5#
        • 2.Qb2#
        • 2.Qc3#
      • 1...Se7
        • 2.Sec5#
        • 2.Qb2#
        • 2.Qc3#
      • 1...Sf6!
  • Keys
    • 1.Qh5!
      • threat
        • 2.Qd1#
      • 1...Sc3
        • 2.Sec5#
      • 1...Se3
        • 2.Qb5#
      • 1...Sb4
        • 2.Sac5#
      • 1...Sf4
        • 2.Qb5#
      • 1...Sb6
        • 2.Qb5#
      • 1...Sf6
        • 2.Qb5#
      • 1...Se7
        • 2.Qb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 7
  • Sets
    • R(e);N_GUARD::QAB(H),XS(c)
  • Tries
    • Try
      • Q(H);N_PINS(c)
      • Threat
        • DUALS(2)
      • Vars
        • S(c);::QAR1(H)
      • Refutation
        • P(b);XQ(H)
    • Try
      • Q(H);CHECK,N_PINS(c)
      • Refutation
        • S(c);P_SPINS(c)
    • Try
      • Q(H);N_PINS(c)
      • Threat
        • DUALS(3)
      • Refutation
        • S(c);XQ(H)
    • Try
      • Q(H);N_PINS(c)
      • Threat
        • DUALS(3)
      • Refutation
        • S(c);
  • Actual
    • Q(H);N_PINS(c)
    • Threat
      • QAB(H)
    • Vars
      • S(c);SBLOCK::S(E)
      • S(c);OGATE::QAR2(H)
      • S(c);SBLOCK::S(F)
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