MESON Chess Problem Database

Problem Display
PID: 265488 (r5bq/8/4n1R1/Q1bp4/2N5/1nRP1kpP/5pN1/5K2 w - - 0 1)

Vlasenko, Nikolai Fillipovich

Zadachi i Etyudi, 2010

r5bq/8/4n1R1/Q1bp4/2N5/1nRP1kpP/5pN1/5K2

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qe5
      • 2.Sxe5#
    • 1...Qxh3
      • 2.Se5#
    • 1...Qh4
      • 2.Se5#
    • 1...Qh6
      • 2.Se5#
    • 1...Qh7
      • 2.Se5#
    • 1...Ba3
      • 2.Qxd5#
    • 1...Be3
      • 2.Qxd5#
    • 1...Bb4
      • 2.Qxd5#
    • 1...Bd4
      • 2.Qxd5#
    • 1...Bb6
      • 2.Qxd5#
    • 1...Bd6
      • 2.Qxd5#
    • 1...Ba7
      • 2.Qxd5#
    • 1...Be7
      • 2.Qxd5#
    • 1...Bf8
      • 2.Qxd5#
    • 1...Sa1
      • 2.Sd2#
    • 1...Sc1
      • 2.Sd2#
    • 1...Sd2+
      • 2.Sxd2#
    • 1...Sbd4
      • 2.Sd2#
    • 1...Sxa5
      • 2.Sd2#
    • 1...Sg7
      • 2.Se5#
    • 1...dxc4
      • 2.Qxa8#
    • 1...d4
      • 2.Qxa8#
  • Tries
    • 1.Sh4+?
      • 1...Kf4
        • 2.Rg4#
      • 1...Qxh4!
    • 1.Rf6+?
      • 1...Sf4
        • 2.Se5#
        • 2.Rxf4#
      • 1...Qxf6!
  • Keys
    • 1.Rg4!
      • threat
        • 2.d4#
      • 1...Sd2+
        • 2.Sxd2#
      • 1...Qxc3
        • 2.Sh4#
      • 1...Qxh3
        • 2.Se5#
      • 1...Qd4
        • 2.Sh4#
      • 1...Qe5
        • 2.Sh4#
        • 2.Sxe5#
      • 1...Qh6
        • 2.Se5#
      • 1...Qh7
        • 2.Se5#
      • 1...Be3
        • 2.Qxd5#
      • 1...Bb4
        • 2.Qxd5#
      • 1...Bd4
        • 2.Qxd5#
      • 1...Bh7
        • 2.Sh4#
      • 1...Sc1
        • 2.Sd2#
      • 1...Sbd4
        • 2.Sd2#
      • 1...Sed4
        • 2.Rf4#
      • 1...Sf4
        • 2.Rxf4#
      • 1...d4
        • 2.Qxa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 12
  • Sets
    • Q(j);N_GUARD::S(F),XQ(j)
    • Q(j);N_GUARD,P_PINS(B),XP(E)::S(F)
    • Q(j);N_GUARD::S(F)
    • B(e);OGATE::QAB(G),XP(f)
    • S(b);N_GUARD::S(F)
    • S(b);CHECK,N_GUARD::S(F),XS(b)
    • S(b);N_GUARD,XQ(G)::S(F)
    • S(g);S_CUTQ(j)::S(F)
    • P(f);OGATEB,XS(F)::QAB(G),XR(h)
    • P(f);OGATEB::QAB(G),XR(h)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(c);P-FLIGHT,S_CUTQ(j)::R1(H)
      • Refutation
        • Q(j);XS(B)
    • Try
      • R(H);CHECK
      • Refutation
        • Q(j);XR(H)
  • Actual
    • R(H);
    • Threat
      • R(C)+P(D)
    • Vars
      • S(b);CHECK,N_GUARD::S(F),XS(b)
      • Q(j);N_GUARD,XR(C)::S(B)
      • Q(j);N_GUARD,P_PINS(B),XP(E)::S(F)
      • Q(j);N_GUARD::S(B)
      • Q(j);N_GUARD::S(F)
      • B(e);OGATE::QAB(G),XP(f)
      • B(i);S_CUTQ(j)::S(B)
      • S(b);N_GUARD::S(F)
      • S(g);N_GUARD::R1(H)
      • S(g);N_GUARD::R1(H),XS(g)
      • P(f);OGATEB::QAB(G),XR(h)
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