MESON Chess Problem Database

Problem Display
PID: 260882 (8/5pQ1/4pP1q/Kn3P2/1NkPR2p/4p3/P7/4BN2 w - - 0 1)

Kirillov, Valery Afanasievich

Maslov, Boris Grigorevich

Neue Zurcher Zeitung, 2009

8/5pQ1/4pP1q/Kn3P2/1NkPR2p/4p3/P7/4BN2

#2

10 + 7

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qxg7
      • 2.Sxe3#
    • 1...Qh5
      • 2.Sxe3#
    • 1...Qxf6
      • 2.Sxe3#
    • 1...Qg6
      • 2.Sxe3#
    • 1...Qh7
      • 2.Sxe3#
    • 1...Qh8
      • 2.Sxe3#
    • 1...exf5
      • 2.Qxf7#
    • 1...e5
      • 2.Qxf7#
  • Tries
    • 1.Qxh6?
      • threat
        • 2.Sxe3#
      • 1...e2
        • 2.Se3#
      • 1...Sxd4!
    • 1.Qf8?
      • threat
        • 2.Qc5#
      • 1...Qxf8
        • 2.Sxe3#
      • 1...Sxd4
        • 2.Qc8#
      • 1...Sd6!
    • 1.Qg2?
      • threat
        • 2.Qe2#
      • 1...Sxd4
        • 2.Qc2#
      • 1...Qh5
        • 2.Sxe3#
      • 1...e2
        • 2.Qxe2#
      • 1...Sc3!
  • Keys
    • 1.Qxf7!
      • threat
        • 2.Qxe6#
      • 1...Qxf6
        • 2.Sxe3#
      • 1...Sxd4
        • 2.Qc7#
      • 1...Sc3
        • 2.Qc7#
      • 1...Sc7
        • 2.Qxc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • Q(f);N_GUARD,XQ(J)::S(B),XP(a)
    • Q(f);N_GUARD::S(B),XP(a)
    • Q(f);N_GUARD,XP(I)::S(B),XP(a)
    • P(e);OGATEB,XP(H)::QAB(J),XP(g)
    • P(e);OGATEB::QAB(J),XP(g)
  • Tries
    • Try
      • Q(J);XQ(f)
      • Threat
        • S(B),XP(a)
      • Vars
        • P(a);::S(B)
      • Refutation
        • S(d);P_SPINS(d),XP(E)
    • Try
      • Q(J);
      • Threat
        • QAR1(J)
      • Vars
        • Q(f);N_GUARD,XQ(J)::S(B),XP(a)
        • S(d);N_GUARD,P_SPINS(d),XP(E)::QAR(J)
      • Refutation
        • S(d);
    • Try
      • Q(J);
      • Threat
        • QAB(J)
      • Vars
        • S(d);N_GUARD,P_SPINS(d),XP(E)::QAR2(J)
        • Q(f);N_GUARD::S(B),XP(a)
        • P(a);::QAB(J),XP(a)
      • Refutation
        • S(d);
  • Actual
    • Q(J);P_PINP(e),XP(g)
    • Threat
      • QAB(J),XP(e)
    • Vars
      • Q(f);N_GUARD,XP(I)::S(B),XP(a)
      • S(d);N_GUARD,P_SPINS(d),XP(E)::QAR(J)
      • S(d);N_GUARD::QAR(J)
      • S(d);N_GUARD::QAR(J),XS(d)
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