MESON Chess Problem Database

Problem Display
PID: 169339 (4r3/7Q/5pR1/3n1n2/2B1k1P1/3N1N2/4PP2/2K1R3 w - - 0 1)

Shanshin, Valery Yurevich

2nd Prize, SuperProblem 165. TT, 2016

4r3/7Q/5pR1/3n1n2/2B1k1P1/3N1N2/4PP2/2K1R3

#2

10 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sf4
      • 2.Sc5#
    • 1...Sd4
      • 2.Sd2#
  • Keys
    • 1.e3!
      • threat
        • 2.Sd2#
      • 1...Kxf3
        • 2.Qh1#
      • 1...Sdxe3
        • 2.Qb7#
      • 1...Sfxe3
        • 2.Rxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • S(b);SBLOCK::S(E)
    • S(c);SBLOCK::S(F)
  • Actual
    • P(C);
    • Threat
      • S(F)
    • Vars
      • K(a);OGATEB,S_FLIGHT,XS(F)::QAB(J)
      • S(b);OGATEB,P_SPINS(b),XP(C)::QAB(J)
      • S(c);OGATEB,P_SPINS(c),XP(C)::QAB(J)+R(I),XP(d)
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