MESON Chess Problem Database

Problem Display
PID: 244505 (8/5p2/7Q/8/3Pp1P1/2PPpp2/2p1kN2/2K1B2R w - - 0 1)

Fomichev, Evgeny Vasilevich

Sachsische Zeitung, 2009

8/5p2/7Q/8/3Pp1P1/2PPpp2/2p1kN2/2K1B2R

#2

9 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...exf2
      • 2.Qd2#
  • Tries
    • 1.Sh3?
      • threat
        • 2.Sf4#
      • 1...Kxd3
        • 2.Qa6#
      • 1...f2!
    • 1.Qa6?
      • threat
        • 2.dxe4#
      • 1...exd3
        • 2.Qxd3#
      • 1...exf2!
    • 1.dxe4?
      • threat
        • 2.Qa6#
      • 1...exf2
        • 2.Qd2#
      • 1...f6!
  • Keys
    • 1.Bd2!
      • threat
        • 2.Qxe3#
      • 1...exd2+
        • 2.Qxd2#
      • 1...Kxf2
        • 2.Qh2#
      • 1...exf2
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(c);OGATE,XS(D)::QAR1(I)
  • Tries
    • Try
      • S(D);
      • Threat
        • S(D)
      • Vars
        • K(b);OGATEB,S_FLIGHT,XP(F)::QAB(I)
      • Refutation
        • P(d);
    • Try
      • Q(I);
      • Threat
        • QAB(I)+P(F),XP(e)
      • Vars
        • P(e);OGATE,P_SPINP(e),XP(F)::QAB1(I),XP(e)
      • Refutation
        • P(c);XS(D)
    • Try
      • P(F);XP(e)
      • Threat
        • QAB(I)
      • Vars
        • P(c);OGATE,XS(D)::QAR1(I)
      • Refutation
        • P(f);
  • Actual
    • B(B);
    • Threat
      • QAR1(I),XP(c)
    • Vars
      • P(c);CHECK,OGATE,XB(B)::QAR1(I),XP(c)
      • K(b);OGATEB,P-FLIGHT,XS(D)::QAR2(I)
      • P(c);XS(D)::QAR1(I)
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