MESON Chess Problem Database

Problem Display
PID: 136377 (6n1/1K1QP3/5P2/R2NBR2/1p2k1n1/2p1p3/8/1qb2B2 w - - 0 1)

Csandli, Kalman

Magyar Sakkelet, 1953

6n1/1K1QP3/5P2/R2NBR2/1p2k1n1/2p1p3/8/1qb2B2

#2

9 + 8

6490 yacpdb 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Qd3
      • 2.Bg2#
    • 1...Sxe5
      • 2.Rf4#
    • 1...b3
      • 2.Sxc3#
      • 2.Ra4#
  • Tries
    • 1.Sb6?
      • threat
        • 2.Bg2#
        • 2.Rf4#
      • 1...Sxe5
        • 2.Raxe5#
      • 1...Qa2
        • 2.Bd3#
        • 2.Rf4#
        • 2.Qd3#
      • 1...Qc2
        • 2.Rf4#
      • 1...Qb2
        • 2.Bd3#
        • 2.Rf4#
        • 2.Qd3#
      • 1...Sh2
        • 2.Rf4#
      • 1...e2!
    • 1.Sc7?
      • threat
        • 2.Bg2#
        • 2.Rf4#
      • 1...Sxe5
        • 2.Raxe5#
      • 1...Qa2
        • 2.Bd3#
        • 2.Rf4#
        • 2.Qd3#
      • 1...Qc2
        • 2.Rf4#
      • 1...Qb2
        • 2.Bd3#
        • 2.Rf4#
        • 2.Qd3#
      • 1...Sh2
        • 2.Rf4#
      • 1...e2!
    • 1.e8S?
      • threat
        • 2.Sd6#
      • 1...Sxe5
        • 2.Rf4#
      • 1...e2!
  • Keys
    • 1.Sxe3!
      • threat
        • 2.Qd4#
      • 1...Kxe3
        • 2.Qd4#
      • 1...Bxe3
        • 2.Bg2#
      • 1...Sxe3
        • 2.Rf4#
      • 1...Sxe5
        • 2.Raxe5#
      • 1...Qd3
        • 2.Qxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • Q(a);SBLOCK::B(A)
    • S(g);SBLOCK,XB(D)::R1(E)
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • S(g);OGATE,XB(D)::R1(B),XS(g)
        • Q(a);::R1(E)
        • S(g);::R1(E)
      • Refutation
        • P(d);
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • S(g);OGATE,XB(D)::R1(B),XS(g)
        • Q(a);::R1(E)
        • S(g);::R1(E)
      • Refutation
        • P(d);
    • Try
      • P(I);
      • Threat
        • S(I)
      • Vars
        • S(g);SBLOCK,XB(D)::R1(E)
      • Refutation
        • P(d);
  • Actual
    • S(C);XP(d)
    • Threat
      • QAR1(H)
    • Vars
      • K(f);P-FLIGHT,XS(C)::QAB1(H)
      • B(b);SBLOCK,XS(C)::B(A)
      • S(g);SBLOCK,XS(C)::R1(E)
      • S(g);OGATE,XB(D)::R1(B),XS(g)
      • Q(a);N_GUARD::QAB1(H),XQ(a)
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