MESON Chess Problem Database

Problem Display
PID: 136155 (8/8/8/1nnP1rPp/1Q3B1K/1NPP1kpN/1p1p3P/1qbR1BrR w - - 0 1)

Benedek, Attila

Christmas Card, 1968-1969

8/8/8/1nnP1rPp/1Q3B1K/1NPP1kpN/1p1p3P/1qbR1BrR

#2

13 + 11

14674 Attila Benedek - That's All 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf4+
      • 2.Qxf4#
    • 1...Sa3
      • 2.Sd4#
    • 1...Sxc3
      • 2.Sd4#
    • 1...Sd4
      • 2.Sxd4#
    • 1...Sd6
      • 2.Sd4#
    • 1...Sa7
      • 2.Sd4#
    • 1...Sc7
      • 2.Sd4#
    • 1...Sxb3
      • 2.Qe4#
    • 1...Sa4
      • 2.Qe4#
    • 1...Se4
      • 2.Qxe4#
    • 1...Sa6
      • 2.Qe4#
    • 1...Se6
      • 2.Qe4#
    • 1...Sb7
      • 2.Qe4#
    • 1...Sd7
      • 2.Qe4#
  • Tries
    • 1.Be2+?
      • 1...Kg2
        • 2.Rdxg1#
      • 1...Kxe2!
    • 1.Qd4?
      • threat
        • 2.Sxg1#
        • 2.Qe3#
      • 1...Rxf4+
        • 2.Qxf4#
      • 1...Qxd3
        • 2.Sxg1#
      • 1...Rxh1
        • 2.Qe3#
      • 1...Sxd4
        • 2.Sxd4#
      • 1...gxh2
        • 2.Qf2#
        • 2.Qe3#
      • 1...Rg2
        • 2.Qe3#
      • 1...Re5
        • 2.Sxg1#
      • 1...Se4
        • 2.Qe3#
        • 2.Qxe4#
      • 1...Rxf1!
  • Keys
    • 1.Rxd2!
      • threat
        • 2.Sxg1#
      • 1...Rxf4+
        • 2.Qxf4#
      • 1...Rxf1
        • 2.Rxf1#
      • 1...Rxh1
        • 2.Bg2#
      • 1...Bxd2
        • 2.Sxd2#
      • 1...gxh2
        • 2.Rf2#
      • 1...Rg2
        • 2.Bxg2#
      • 1...Sd4
        • 2.Sxd4#
      • 1...Se4
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 11
  • Sets
    • R(j);CHECK,OGATE,XB(J)::QAR1(I),XR(j)
    • S(h);N_GUARD::S(E)
    • S(h);N_GUARD,XP(F)::S(E)
    • S(h);N_GUARD::S(E),XS(h)
    • S(i);N_GUARD,XS(E)::QAB1(I)
    • S(i);N_GUARD::QAB1(I)
    • S(i);N_GUARD::QAB1(I),XS(i)
  • Tries
    • Try
      • B(B);CHECK
      • Vars
        • K(f);S_FLIGHT::R1(A),XR(c)
      • Refutation
        • K(f);S_FLIGHT,XB(B)
    • Try
      • Q(I);
      • Threat
        • DUALS(2)
      • Vars
        • R(j);CHECK,OGATE,XB(J)::QAR1(I),XR(j)
        • Q(a);XP(G)::S(H),XR(c)
        • R(c);XR(C)::QAR1(I)
        • S(h);XQ(I)::S(E),XS(h)
        • R(c);::QAR1(I)
        • R(j);::S(H),XR(c)
      • Refutation
        • R(c);XB(B)
  • Actual
    • R(A);XP(e)
    • Threat
      • S(H),XR(c)
    • Vars
      • R(j);CHECK,OGATE,XB(J)::QAR1(I),XR(j)
      • R(c);OGATE,XB(B)::R(C),XR(c)
      • R(c);N_GUARD,XR(C)::B(B)
      • B(b);XR(A)::S(E),XB(b)
      • P(g);N_GUARD,XP(D)::R1(A)
      • R(c);N_GUARD::B(B),XR(c)
      • S(h);N_GUARD::S(E),XS(h)
      • S(i);N_GUARD::QAB1(I),XS(i)
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