MESON Chess Problem Database

Problem Display
PID: 94617 (8/3K1p2/3p1p2/4p2P/2pNk1p1/4P3/2P1Q1P1/2B5 w - - 0 1)

Rowland, Thomas B

Sussex Chess Magazine, 1883

8/3K1p2/3p1p2/4p2P/2pNk1p1/4P3/2P1Q1P1/2B5

#2

8 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...g3
      • 2.Qf3#
    • 1...d5
      • 2.Qxg4#
  • Tries
    • 1.Kxd6?
      • threat
        • 2.Qxg4#
      • 1...g3
        • 2.Qf3#
        • 2.Qg4#
      • 1...f5!
    • 1.Sb5?
      • 1...Kf5
        • 2.e4#
      • 1...f5
        • 2.Sc3#
        • 2.Qxc4#
      • 1...c3
        • 2.Qd3#
      • 1...g3
        • 2.Qf3#
      • 1...d5
        • 2.Sd6#
        • 2.Qxg4#
      • 1...Kd5!
    • 1.Sf5?
      • 1...Kxf5
        • 2.e4#
      • 1...c3
        • 2.Qd3#
      • 1...g3
        • 2.Qf3#
      • 1...d5
        • 2.Sg3#
        • 2.Sd6#
        • 2.Qxg4#
      • 1...Kd5!
    • 1.Sc6?
      • 1...Kf5
        • 2.e4#
      • 1...f5
        • 2.Qxc4#
      • 1...c3
        • 2.Qd3#
      • 1...g3
        • 2.Qf3#
      • 1...d5
        • 2.Qxg4#
      • 1...Kd5!
    • 1.Se6?
      • 1...Kd5
        • 2.e4#
      • 1...Kf5
        • 2.e4#
      • 1...f5
        • 2.Qxc4#
      • 1...c3
        • 2.Qd3#
      • 1...g3
        • 2.Qf3#
      • 1...d5
        • 2.Qxg4#
      • 1...fxe6!
  • Keys
    • 1.Sb3!
      • 1...Kd5
        • 2.e4#
      • 1...Kf5
        • 2.e4#
      • 1...cxb3
        • 2.Qd3#
      • 1...f5
        • 2.Qxc4#
      • 1...c3
        • 2.Qd3#
      • 1...g3
        • 2.Qf3#
      • 1...d5
        • 2.Qxg4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • P(c);N_GUARD::QAB1(C)
    • P(e);SBLOCK::QAR2(C),XP(c)
  • Tries
    • Try
      • K(H);P-FLIGHT,XP(e)
      • Threat
        • QAR2(C),XP(c)
      • Refutation
        • P(f);
    • Try
      • S(F);
      • Vars
        • K(b);OGATE,S_FLIGHT::P(E)
        • P(a);N_GUARD::QAB1(C)
        • P(c);N_GUARD::QAB1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(F);
      • Vars
        • K(b);OGATE,S_FLIGHT,XS(F)::P(E)
        • P(a);N_GUARD::QAB1(C)
        • P(c);N_GUARD::QAB1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(F);
      • Vars
        • K(b);OGATE,S_FLIGHT::P(E)
        • P(f);SBLOCK::QAR2(C),XP(a)
        • P(a);N_GUARD::QAB1(C)
        • P(c);N_GUARD::QAB1(C)
        • P(e);SBLOCK::QAR2(C),XP(c)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(F);
      • Vars
        • K(b);OGATE,S_FLIGHT::P(E)
        • P(f);SBLOCK::QAR2(C),XP(a)
        • P(a);N_GUARD::QAB1(C)
        • P(c);N_GUARD::QAB1(C)
        • P(e);SBLOCK::QAR2(C),XP(c)
      • Refutation
        • P(g);XS(F)
  • Actual
    • S(F);
    • Vars
      • K(b);OGATE,S_FLIGHT::P(E)
      • P(a);N_GUARD,XS(F)::QAB1(C)
      • P(f);SBLOCK::QAR2(C),XP(a)
      • P(a);N_GUARD::QAB1(C)
      • P(c);N_GUARD::QAB1(C)
      • P(e);SBLOCK::QAR2(C),XP(c)
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