MESON Chess Problem Database

Problem Display
PID: 239921 (8/8/Q2Pp3/2R1pbN1/nB1kB1p1/5p2/1n1P1p2/5K2 w - - 0 1)

Erokhin, Vladimir Alekseevich

Sinfonie Scacchistiche, 1986

8/8/Q2Pp3/2R1pbN1/nB1kB1p1/5p2/1n1P1p2/5K2

#2

8 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe4
      • 2.Sxe6#
    • 1...Sd1
      • 2.Rc4#
      • 2.Qd3#
      • 2.Qc4#
    • 1...Sd3
      • 2.Rc4#
      • 2.Qxd3#
      • 2.Qc4#
    • 1...Sc4
      • 2.Rxc4#
      • 2.Qxc4#
    • 1...Sxc5
      • 2.Bc3#
  • Tries
    • 1.Bc3+?
      • 1...Kxc5
        • 2.Qc6#
      • 1...Sxc3!
    • 1.Qe2?
      • threat
        • 2.Qxf2#
        • 2.Qe3#
      • 1...Bxe4
        • 2.Sxe6#
        • 2.Qe3#
        • 2.Qxe4#
      • 1...Sxc5
        • 2.Bc3#
      • 1...Sd1
        • 2.Rc4#
        • 2.Qd3#
        • 2.Qc4#
      • 1...Sd3
        • 2.Qxd3#
        • 2.Qe3#
      • 1...Sc4
        • 2.Rxc4#
        • 2.Qd3#
        • 2.Qxc4#
      • 1...g3
        • 2.Sxf3#
        • 2.Qe3#
      • 1...fxe2+!
  • Keys
    • 1.Qc6!
      • 1...Bxe4
        • 2.Qxe4#
      • 1...Sxc5
        • 2.Qxc5#
      • 1...Bg6
        • 2.Sxe6#
      • 1...Bh7
        • 2.Sxe6#
      • 1...Sd1
        • 2.Rc4#
      • 1...Sd3
        • 2.Rc4#
      • 1...Sc4
        • 2.Rxc4#
      • 1...Sc3
        • 2.Bxc3#
      • 1...Sb6
        • 2.Bc3#
      • 1...g3
        • 2.Sxf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • B(h);N_GUARD,SBLOCK,XB(D)::S(F),XP(i)
    • S(d);N_GUARD,SBLOCK,XR(E)::B(C)
  • Tries
    • Try
      • B(C);CHECK
      • Vars
        • K(e);S_FLIGHT,XR(E)::QAR1(G)
      • Refutation
        • S(d);XB(C)
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • S(d);N_GUARD,SBLOCK,XR(E)::B(C)
      • Refutation
        • P(c);CHECK,XQ(G)
  • Actual
    • Q(G);
    • Vars
      • B(h);OGATE,XB(D)::QAR1(G),XB(h)
      • S(d);OGATE,XR(E)::QAB1(G),XS(d)
      • B(h);N_GUARD::S(F),XP(i)
      • S(a);N_GUARD::R1(E)
      • S(a);N_GUARD::R1(E),XS(a)
      • S(d);N_GUARD::B(C),XS(d)
      • S(d);N_GUARD::B(C)
      • P(f);N_GUARD::S(F),XP(c)
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