MESON Chess Problem Database

Problem Display
PID: 15114 (3n1q2/1p1r1p2/3N1B2/1QPk2N1/6B1/1K1P1R2/8/3nrb2 w - - 0 1)

Fokin, Yuri Georgievich

Sushkov, Yuri Akimovich

64 Shakhmatnoe obozrenie, 1980

3n1q2/1p1r1p2/3N1B2/1QPk2N1/6B1/1K1P1R2/8/3nrb2

#2

9 + 9

4849 The Sushkov Theme 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.dxe4#
    • 1...Rxd6
      • 2.c6#
    • 1...Be2
      • 2.Rf5#
    • 1...Bxd3
      • 2.Rxd3#
    • 1...Sc6
      • 2.Qc4#
  • Tries
    • 1.Sde4?
      • threat
        • 2.Rf5#
      • 1...Rxe4
        • 2.dxe4#
      • 1...Qd6
        • 2.cxd6#
      • 1...Qe8
        • 2.c6#
      • 1...Re7
        • 2.c6#
      • 1...Se3
        • 2.Sc3#
      • 1...Sc6
        • 2.Qc4#
      • 1...Qe7!
  • Keys
    • 1.Sge4!
      • threat
        • 2.c6#
      • 1...Qxd6
        • 2.cxd6#
      • 1...Rxe4
        • 2.dxe4#
      • 1...Bxd3
        • 2.Rxd3#
      • 1...Sc3
        • 2.Sxc3#
      • 1...Sc6
        • 2.Qc4#
      • 1...Se6
        • 2.Rf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(b);OGATE::P(B),XR(b)
    • R(f);SBLOCK,XS(H)::QAR(E)+P(F)
    • B(c);S_CUTR(b)::R(C)
    • B(c);OGATE,XP(B)::R(C),XB(c)
    • S(h);SBLOCK::QAB1(E)
  • Tries
    • Try
      • S(H);
      • Threat
        • R(C)
      • Vars
        • R(b);OGATE,XS(H)::P(B),XR(b)
        • Q(i);OGATE::QAR(E)+P(F),XQ(i)
        • Q(i);N_GUARD::QAR(E)+P(F)
        • R(f);S_CUTQ(i)::QAR(E)+P(F)
        • S(a);N_GUARD::S(H)
        • S(h);SBLOCK::QAB1(E)
      • Refutation
        • Q(i);
  • Actual
    • S(G);
    • Threat
      • QAR(E)+P(F)
    • Vars
      • Q(i);OGATE,XS(H)::QAR(E)+P(F),XQ(i)
      • R(b);OGATE,XS(G)::P(B),XR(b)
      • B(c);OGATE,XP(B)::R(C),XB(c)
      • S(a);N_GUARD::S(G),XS(a)
      • S(h);SBLOCK::QAB1(E)
      • S(h);SBLOCK::R(C)
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