MESON Chess Problem Database

Problem Display
PID: 232474 (3Bn3/3N1K2/r2pPpP1/1R1N3p/r2k2qR/3P1p2/p2Q4/1b1n4 w - - 0 1)

Dikusarov, Andrey Nikolayovich

Freie Presse, 2009

3Bn3/3N1K2/r2pPpP1/1R1N3p/r2k2qR/3P1p2/p2Q4/1b1n4

#2

10 + 12

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4
      • 2.Rxe4#
    • 1...Qf4
      • 2.Rxf4#
    • 1...Ra5
      • 2.Bb6#
    • 1...Rb6
      • 2.Bxb6#
    • 1...Ra7
      • 2.Bb6#
    • 1...Ra8
      • 2.Bb6#
    • 1...Sb2
      • 2.Qc3#
      • 2.Qe3#
    • 1...Sf2
      • 2.Qc3#
      • 2.Qe3#
    • 1...Sc3
      • 2.Qxc3#
      • 2.Qe3#
    • 1...Se3
      • 2.Qc3#
      • 2.Qxe3#
    • 1...Sc7
      • 2.Bxf6#
    • 1...Sg7
      • 2.Bxf6#
  • Keys
    • 1.Sf4!
      • threat
        • 2.Rd5#
      • 1...Qxe6+
        • 2.Sxe6#
      • 1...Qxg6+
        • 2.Sxg6#
      • 1...Qxf4
        • 2.Rxf4#
      • 1...Bxd3
        • 2.Qxd3#
      • 1...Qf5
        • 2.Se2#
      • 1...Qg5
        • 2.Se2#
      • 1...R4a5
        • 2.Rb4#
      • 1...R6a5
        • 2.Bb6#
      • 1...Sc3
        • 2.Qf2#
      • 1...Se3
        • 2.Qb2#
      • 1...Sc7
        • 2.Bxf6#
      • 1...d5
        • 2.Rxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 5
  • Sets
    • Q(g);OGATE::R1(C),XQ(g)
    • Q(g);OGATE::R(C),XQ(g)
    • R(i);N_GUARD::B(J)
    • R(i);N_GUARD::B(J),XR(i)
    • R(i);N_GUARD,P_PINS(H)::B(J)
    • S(l);N_GUARD::B(J),XP(k)
  • Actual
    • S(E);N_PINQ(g)
    • Threat
      • R1(D)
    • Vars
      • Q(g);CHECK,XP(F)::R(C)+S(E),DCHECK,XQ(g)
      • Q(g);CHECK,XP(G)::R(C)+S(E),XQ(g)
      • Q(g);OGATE,P_SPINQ(g),XS(E)::R(C),XQ(g)
      • B(a);OGATE,P_SPINB(a),XP(B)::QAR1(A),XB(a)
      • Q(g);::R(C)+S(E),DCHECK
      • R(e);N_GUARD::R(D)
      • R(i);N_GUARD::B(J)
      • S(b);N_GUARD,SBLOCK::QAB(A)
      • S(l);N_GUARD::B(J),XP(k)
      • P(j);::R1(D),XP(j)
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