MESON Chess Problem Database

Problem Display
PID: 109083 (8/3N1Q1p/3p3K/4P2p/4kNpP/2P5/3P1p2/1b1B1r2 w - - 0 1)

Okkinga, AS

Nar. turnaji nizoz. sach. assoc., 1899

8/3N1Q1p/3p3K/4P2p/4kNpP/2P5/3P1p2/1b1B1r2

#2

9 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...dxe5
      • 2.Sc5#
  • Tries
    • 1.Kg5?
      • threat
        • 2.Qc4#
        • 2.Qd5#
        • 2.Qf5#
        • 2.Qxh7#
      • 1...Rxd1
        • 2.Qd5#
      • 1...Ba2
        • 2.Qf5#
        • 2.Qxh7#
      • 1...Bd3
        • 2.Qd5#
        • 2.Qf5#
        • 2.Qxh7#
      • 1...d5
        • 2.Qxd5#
        • 2.Qf5#
        • 2.Qxh7#
      • 1...h6+!
    • 1.Sc5+?
      • 1...Kxe5
        • 2.d4#
      • 1...dxc5!
    • 1.Bxg4?
      • threat
        • 2.Qc4#
        • 2.Qf5#
      • 1...Ba2
        • 2.Qf5#
      • 1...Bd3
        • 2.Qf5#
      • 1...d5
        • 2.Qf5#
      • 1...hxg4!
  • Keys
    • 1.Sh3!
      • 1...Kd3
        • 2.Qd5#
      • 1...Rxd1
        • 2.Sxf2#
      • 1...gxh3
        • 2.Qf3#
      • 1...dxe5
        • 2.Sc5#
      • 1...Re1
        • 2.Sxf2#
      • 1...Rg1
        • 2.Sxf2#
      • 1...Rh1
        • 2.Sxf2#
      • 1...Ba2
        • 2.Bc2#
      • 1...Bc2
        • 2.Bxc2#
      • 1...Bd3
        • 2.Sg5#
      • 1...g3
        • 2.Qf3#
      • 1...d5
        • 2.Qxh7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
    • P(g);N_GUARD,SBLOCK,XP(F)::S(H)
  • Tries
    • Try
      • K(G);S_FLIGHT
      • Threat
        • DUALS(4)
      • Vars
        • R(b);XB(A)::QAB1(I)
      • Refutation
        • P(h);CHECK
    • Try
      • S(H);CHECK
      • Vars
        • K(d);P-FLIGHT,XP(F)::P(B)
      • Refutation
        • P(g);XS(H)
    • Try
      • B(A);XP(e)
      • Threat
        • DUALS(2)
      • Vars
        • B(a);::QAB1(I)
        • P(g);::QAB1(I)
      • Refutation
        • P(f);XB(A)
  • Actual
    • S(D);
    • Vars
      • K(d);S_FLIGHT::QAR2(I)
      • R(b);N_GUARD,XB(A)::S(D),XP(c)
      • P(e);N_GUARD,XS(D)::QAB1(I)
      • P(g);N_GUARD,SBLOCK,XP(F)::S(H)
      • R(b);N_GUARD::S(D),XP(c)
      • B(a);N_GUARD::B(A)
      • B(a);N_GUARD::B(A),XB(a)
      • B(a);SBLOCK::S(D)
      • P(e);N_GUARD::QAB1(I)
      • P(g);SBLOCK::QAB(I),XP(h)
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