MESON Chess Problem Database

Problem Display
PID: 106051 (K3N2b/p4Q2/6p1/7r/3nkN2/3p1bP1/2P3P1/6B1 w - - 0 1)

Belchikov, Nikolai Ivanovich

14. USSR Championship, 1992

K3N2b/p4Q2/6p1/7r/3nkN2/3p1bP1/2P3P1/6B1

#2

8 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rh1
      • 2.Qd5#
    • 1...Rh2
      • 2.Qd5#
    • 1...Rh3
      • 2.Qd5#
    • 1...Rh4
      • 2.Qd5#
    • 1...Rd5
      • 2.Qxd5#
    • 1...Re5
      • 2.Sd6#
      • 2.cxd3#
    • 1...Rh6
      • 2.Qd5#
    • 1...Rh7
      • 2.Qd5#
    • 1...Be5
      • 2.cxd3#
    • 1...Sf5
      • 2.Qd5#
    • 1...g5
      • 2.Qd5#
  • Tries
    • 1.Qe6+?
      • 1...Re5
        • 2.Sd6#
        • 2.cxd3#
      • 1...Be5
        • 2.Sd6#
        • 2.Sf6#
        • 2.cxd3#
      • 1...Sxe6!
  • Keys
    • 1.Sxd3!
      • threat
        • 2.Sd6#
      • 1...Sxc2
        • 2.Qxf3#
      • 1...Se6
        • 2.Qxf3#
      • 1...Rd5
        • 2.Qf4#
      • 1...Be5
        • 2.Sc5#
      • 1...Sb5
        • 2.Qxf3#
        • 2.gxf3#
      • 1...Sf5
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • R(e);N_GUARD::QAB1(F)
    • R(e);N_GUARD::QAB1(F),XR(e)
    • B(h);SBLOCK::P(B),XP(a)
    • S(c);S_CUTR(e)::QAB1(F)
    • P(f);S_CUTR(e)::QAB1(F)
  • Tries
    • Try
      • Q(F);CHECK
      • Refutation
        • S(c);XQ(F)
  • Actual
    • S(E);XP(a)
    • Threat
      • S(H)
    • Vars
      • S(c);N_GUARD,XP(B)::QAB1(F),XB(b)
      • S(c);N_GUARD::QAB1(F),XB(b)
      • R(e);SBLOCK::QAR1(F)
      • B(h);SBLOCK,S_CUTR(e)::S(E)
      • S(c);N_GUARD,SBLOCK,S_CUTR(e)::QAB(F)
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