MESON Chess Problem Database

Problem Display
PID: 234108 (b1Q5/3N4/rq1PBpp1/8/N2rk3/3R2PK/2P1P3/b7 w - - 0 1)

Zalokotsky, Roman Fedorovich (aka Fedorovich, Roman)

Buletin Problemistic, 1999

b1Q5/3N4/rq1PBpp1/8/N2rk3/3R2PK/2P1P3/b7

#2

10 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qc5
      • 2.Saxc5#
    • 1...Qd8
      • 2.Sac5#
    • 1...Qb1
      • 2.Sac5#
    • 1...Qb2
      • 2.Sac5#
    • 1...Qb3
      • 2.Sac5#
    • 1...Qb7
      • 2.Sac5#
    • 1...Qb8
      • 2.Sac5#
    • 1...Bc3
      • 2.Sxc3#
  • Tries
    • 1.Qxa8+?
      • 1...Qc6
        • 2.Sac5#
      • 1...Qb7
        • 2.Sac5#
      • 1...Rd5
        • 2.Qxd5#
      • 1...Rxa8!
  • Keys
    • 1.Qc3!
      • threat
        • 2.Re3#
      • 1...Rxd3
        • 2.Qxd3#
      • 1...Rdxa4
        • 2.Sxf6#
      • 1...Rxd6
        • 2.Sxf6#
      • 1...Bxc3
        • 2.Sxc3#
      • 1...Rb4
        • 2.Sxf6#
      • 1...Rc4
        • 2.Sxf6#
      • 1...Rd5
        • 2.Sxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 7
  • Sets
    • Q(e);N_GUARD::S(F),XQ(e)
    • Q(e);N_GUARD::S(F)
    • B(a);N_GUARD::S(F),XB(a)
  • Tries
    • Try
      • Q(J);CHECK,XB(h)
      • Vars
        • Q(e);P_SPINQ(e)::S(F)
        • R(b);N_GUARD,P_SPINR(b)::QAB1(J),XR(b)
      • Refutation
        • R(d);XQ(J)
  • Actual
    • Q(J);
    • Threat
      • R1(C)
    • Vars
      • R(b);OGATE,P_PINP(D),XR(C)::QAB1(J),XR(b)
      • R(b);XS(F)::S(I),XP(f)
      • R(b);XP(G)::S(I),XP(f)
      • B(a);XQ(J)::S(F),XB(a)
      • R(b);::S(I),XP(f)
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