MESON Chess Problem Database

Problem Display
PID: 253064 (2nK4/1pR5/1N1kb3/3P1p2/6N1/8/n1rQ2rb/2R4B w - - 0 1)

Rudenko, Valentin Fedorovich

Shedey, Sergey Oleksandrovich

Probleemblad, 1983

2nK4/1pR5/1N1kb3/3P1p2/6N1/8/n1rQ2rb/2R4B

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rb2
      • 2.Sc4#
    • 1...Rc4
      • 2.Sxc4#
    • 1...Rg3
      • 2.Qf4#
    • 1...Bg1
      • 2.Qf4#
    • 1...Bf4
      • 2.Qxf4#
    • 1...Bxd5
      • 2.Qxd5#
    • 1...Bf7
      • 2.Sxc8#
    • 1...Bg8
      • 2.Sxc8#
    • 1...Sc3
      • 2.Sc4#
  • Tries
    • 1.Qe3?
      • threat
        • 2.Qxe6#
      • 1...Bxd5
        • 2.Sxc8#
      • 1...Rce2
        • 2.Qc5#
      • 1...Be5
        • 2.Qxe5#
      • 1...Bd7
        • 2.Rxd7#
      • 1...Bf7
        • 2.Rd7#
      • 1...Bg8
        • 2.Rd7#
      • 1...Rge2!
    • 1.Qb4+?
      • 1...Rc5
        • 2.Qxc5#
      • 1...Sxb4!
  • Keys
    • 1.Qh6!
      • threat
        • 2.Qxe6#
      • 1...Rge2
        • 2.Sxc8#
      • 1...Rce2
        • 2.Rd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 9
  • Sets
    • R(b);N_GUARD::S(F)
    • R(b);N_GUARD::S(F),XR(b)
    • R(c);S_CUTB(d)::QAB(C)
    • B(d);N_GUARD::QAB(C)
    • B(d);N_GUARD::QAB(C),XB(d)
    • B(g);OGATE,P_SPINB(g),XP(E)::QAR1(C),XB(g)
    • B(g);N_GUARD::S(F),XS(i)
    • S(a);S_CUTR(b)::S(F)
  • Tries
    • Try
      • Q(C);
      • Threat
        • QAR1(C),XB(g)
      • Vars
        • B(g);N_GUARD,SBLOCK,XP(E)::S(F),XS(i)
        • R(b);N_GUARD::QAB1(C)
        • B(d);N_GUARD::QAB1(C),XB(d)
        • B(g);N_GUARD::R1(G),XB(g)
        • B(g);N_GUARD::R1(G)
      • Refutation
        • R(c);
    • Try
      • Q(C);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAB1(C),XR(b)
      • Refutation
        • S(a);XQ(C)
  • Actual
    • Q(C);P_PINB(g)
    • Threat
      • QAR1(C),XB(g)
    • Vars
      • R(c);::S(F),XS(i)
      • R(b);::R1(G)
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