MESON Chess Problem Database

Problem Display
PID: 185128 (7b/qrpKP3/b1NnN3/1p1k4/3r4/1P2RP2/4P3/2R5 w - - 0 1)

Kiss, Ivan

5th Comm., Myllyniemi-50 JT, 1980

7b/qrpKP3/b1NnN3/1p1k4/3r4/1P2RP2/4P3/2R5

#2

9 + 9

117 Suomen Shakki 1981

SOLUTION

  • SOUND
  • Sets
    • 1...Qc5
      • 2.Rxc5#
    • 1...Qb8
      • 2.Rc5#
    • 1...Qa8
      • 2.Rc5#
    • 1...Rd1
      • 2.Sb4#
      • 2.Sf4#
    • 1...Rd2
      • 2.Sb4#
      • 2.Sf4#
    • 1...Rd3
      • 2.Sb4#
      • 2.Sf4#
    • 1...Rb4
      • 2.Sxb4#
    • 1...Rf4
      • 2.Sxf4#
    • 1...Rb6
      • 2.Rc5#
    • 1...Be5
      • 2.Rxe5#
    • 1...Sc4
      • 2.Sb4#
    • 1...Se4
      • 2.Sf4#
  • Tries
    • 1.Rd1?
      • threat
        • 2.Sb4#
      • 1...Qc5
        • 2.Sf4#
      • 1...Se4
        • 2.fxe4#
      • 1...b4!
  • Keys
    • 1.Rd3!
      • threat
        • 2.Sf4#
      • 1...Be5
        • 2.Sb4#
      • 1...Sc4
        • 2.e4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 7
  • Sets
    • Q(f);N_GUARD::R1(A),XQ(f)
    • Q(f);N_GUARD::R1(A)
    • R(a);N_GUARD::S(F),XR(a)
    • R(a);N_GUARD::S(G),XR(a)
    • R(g);S_CUTQ(f)::R1(A)
    • B(i);N_GUARD::R1(D),XB(i)
    • S(e);S_CUTR(a)::S(F)
    • S(e);S_CUTR(a)::S(G)
  • Tries
    • Try
      • R(A);P_PINR(a)
      • Threat
        • S(F)
      • Vars
        • Q(f);SBLOCK::S(G)
        • S(e);OGATE::P(E),XS(e)
      • Refutation
        • P(b);
  • Actual
    • R(D);P_PINR(a)
    • Threat
      • S(G)
    • Vars
      • B(i);SBLOCK::S(F)
      • S(e);N_GUARD::P(B)
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