MESON Chess Problem Database

Problem Display
PID: 11748 (bb6/8/4K3/2Q1p3/p2PkN2/R3P2R/pnPp2P1/q2r1r2 w - - 0 1)

Mlynka, Karol

3rd Prize, Sahs/Shakhmaty (Riga), 1971

bb6/8/4K3/2Q1p3/p2PkN2/R3P2R/pnPp2P1/q2r1r2

#2

9 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rf3
      • 2.gxf3#
    • 1...Bd5+
      • 2.Qxd5#
    • 1...Bc6
      • 2.Qxc6#
    • 1...Ba7
      • 2.Qxe5#
    • 1...Sd3
      • 2.cxd3#
    • 1...exd4
      • 2.Qxd4#
      • 2.Qf5#
    • 1...exf4
      • 2.Qf5#
  • Tries
    • 1.Se2?
      • threat
        • 2.Sc3#
        • 2.Sg3#
      • 1...Bd5+
        • 2.Qxd5#
      • 1...exd4
        • 2.Qxd4#
      • 1...Rf3
        • 2.gxf3#
      • 1...Sd3
        • 2.cxd3#
      • 1...Sc4
        • 2.Sg3#
      • 1...Rf6+!
    • 1.Sd5?
      • threat
        • 2.Sc3#
      • 1...Rf6+
        • 2.Sxf6#
      • 1...Bxd5+
        • 2.Qxd5#
      • 1...exd4
        • 2.Qxd4#
      • 1...Rf3
        • 2.gxf3#
      • 1...Sd3
        • 2.cxd3#
      • 1...Sc4!
  • Keys
    • 1.Sh5!
      • threat
        • 2.Sg3#
      • 1...Rf6+
        • 2.Sxf6#
      • 1...Bd5+
        • 2.Qxd5#
      • 1...exd4
        • 2.Qxd4#
      • 1...Rf3
        • 2.gxf3#
      • 1...Sd3
        • 2.cxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(c);OGATE::P(B),XR(c)
    • B(j);CHECK,N_GUARD::QAB1(H),XB(j)
    • B(j);N_GUARD::QAB(H),XB(j)
    • B(k);N_GUARD::QAR1(H),XP(i)
    • S(e);OGATE::P(A),XS(e)
    • P(i);OGATE,XS(G)::QAB1(H)
  • Tries
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • B(j);CHECK,N_GUARD::QAB1(H),XB(j)
        • P(i);OGATE,XP(F)::QAR1(H),XP(i)
        • R(c);OGATE::P(B),XR(c)
        • S(e);OGATE::P(A),XS(e)
        • S(e);::S(G)
      • Refutation
        • R(c);CHECK
    • Try
      • S(G);
      • Threat
        • S(G)
      • Vars
        • R(c);CHECK,N_GUARD::S(G),XR(c)
        • B(j);CHECK,OGATE,XS(G)::QAB1(H),XB(j)
        • P(i);OGATE,XP(F)::QAR1(H),XP(i)
        • R(c);OGATE::P(B),XR(c)
        • S(e);OGATE::P(A),XS(e)
      • Refutation
        • S(e);
  • Actual
    • S(G);
    • Threat
      • S(G)
    • Vars
      • R(c);CHECK,N_GUARD::S(G),XR(c)
      • B(j);CHECK,N_GUARD::QAB1(H),XB(j)
      • P(i);OGATE,XP(F)::QAR1(H),XP(i)
      • R(c);OGATE::P(B),XR(c)
      • S(e);OGATE::P(A),XS(e)
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