MESON Chess Problem Database

Problem Display
PID: 135465 (2N1B2K/1pn1R2p/pBp5/1p1k4/3npp2/2pP4/1b2N2q/2Q4b w - - 0 1)

Aleksandrov, Vladimir Aleksandrovich

Troll, 2009

2N1B2K/1pn1R2p/pBp5/1p1k4/3npp2/2pP4/1b2N2q/2Q4b

#2

8 + 14

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Qg1
      • 2.Sxf4#
    • 1...Qg2
      • 2.Sxf4#
    • 1...Qh3
      • 2.Sxf4#
    • 1...Qh5
      • 2.Sxf4#
    • 1...Bxc1
      • 2.Sxc3#
    • 1...Ba3
      • 2.Sxc3#
  • Tries
    • 1.Qxc3?
      • threat
        • 2.Qc5#
      • 1...Bxc3
        • 2.Sxc3#
      • 1...Sxe2
        • 2.Re5#
      • 1...Ba3
        • 2.Qxd4#
      • 1...Sc2
        • 2.Re5#
      • 1...Sb3
        • 2.Re5#
      • 1...Sf3
        • 2.dxe4#
      • 1...Sf5
        • 2.Re5#
      • 1...Sde6
        • 2.Rd7#
      • 1...c5
        • 2.Qxc5#
      • 1...Sce6!
  • Keys
    • 1.Qxf4!
      • threat
        • 2.Re5#
      • 1...Qxf4
        • 2.Sxf4#
      • 1...exd3
        • 2.Qxd4#
      • 1...Qh5
        • 2.Qd6#
      • 1...Sf3
        • 2.Qxe4#
      • 1...Sde6
        • 2.Rd7#
      • 1...Sce6
        • 2.Rd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 5
  • Sets
    • Q(c);N_GUARD::S(B),XP(g)
    • B(b);N_GUARD,XQ(A)::S(B),XP(d)
    • B(b);N_GUARD::S(B),XP(d)
  • Tries
    • Try
      • Q(A);XP(d)
      • Threat
        • QAR1(A)
      • Vars
        • B(b);XQ(A)::S(B),XB(b)
        • S(e);P_PINQ(A),XS(B)::R1(E)
        • B(b);N_GUARD::QAR1(A),XS(e)
        • S(e);P_PINQ(A)::R1(E)
        • S(e);P_PINQ(A),S_CUTB(a)::P(C),XP(f)
        • S(e);P_PINQ(A),SBLOCK::R(E)
        • P(k);::QAR1(A),XP(k)
      • Refutation
        • S(m);
  • Actual
    • Q(A);XP(g)
    • Threat
      • R1(E)
    • Vars
      • Q(c);XQ(A)::S(B),XQ(c)
      • P(f);OGATE,XP(C)::QAR1(A),XS(e)
      • Q(c);N_GUARD::QAR1(A)
      • S(e);S_CUTB(a)::QAB1(A),XP(f)
      • S(e);SBLOCK::R(E)
      • S(m);SBLOCK::R(E)
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