MESON Chess Problem Database

Problem Display
PID: 253115 (4N3/3p4/2p1P2R/3kp1KB/Q1n3N1/1R2P3/3p4/8 w - - 0 1)

Slater, George James

6th Prize=, English Mechanic and World of Science, 1888

(First published on Fri May 11 1888)

4N3/3p4/2p1P2R/3kp1KB/Q1n3N1/1R2P3/3p4/8

#2

9 + 6

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Sgf6#
    • 1...c5
      • 2.Qa8#
  • Tries
    • 1.Sgf6+?
      • 1...Kc5
        • 2.Qb4#
      • 1...Kxe6!
    • 1.Sc7+?
      • 1...Ke4
        • 2.Sf2#
        • 2.Sf6#
      • 1...Kc5
        • 2.Qb4#
      • 1...Kd6!
    • 1.Rd3+?
      • 1...Ke4
        • 2.Sf2#
      • 1...Kc5!
    • 1.Qb5+?
      • 1...Ke4
        • 2.Sf2#
        • 2.Sgf6#
      • 1...c5
        • 2.Qb7#
      • 1...cxb5!
    • 1.Qa5+?
      • 1...Ke4
        • 2.Sf2#
        • 2.Sgf6#
      • 1...c5
        • 2.Qa8#
      • 1...Sxa5!
  • Keys
    • 1.Rc3!
      • threat
        • 2.Qxc4#
      • 1...Ke4
        • 2.Sgf6#
      • 1...Kc5
        • 2.Qa5#
      • 1...Sxe3
        • 2.Sxe3#
      • 1...Sb2
        • 2.e4#
      • 1...Sa3
        • 2.e4#
      • 1...Sa5
        • 2.e4#
      • 1...Sb6
        • 2.e4#
      • 1...Sd6
        • 2.Sc7#
      • 1...c5
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • K(c);N_GUARD,P_SPINS(b),S_FLIGHT::S(D)
    • P(e);OGATEB,SBLOCK::QAB(C)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(c);N_GUARD,P-FLIGHT::QAB1(C)
      • Refutation
        • K(c);S_FLIGHT,XP(G)
    • Try
      • S(I);CHECK
      • Vars
        • K(c);N_GUARD,P-FLIGHT::QAB1(C)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(A);CHECK
      • Vars
        • K(c);N_GUARD,P_SPINS(b),S_FLIGHT::S(D)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • P(e);OGATEB,P_SPINP(e),SBLOCK::QAB(C)
      • Refutation
        • P(e);XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • P(e);OGATEB,P_SPINP(e),SBLOCK::QAB(C)
      • Refutation
        • S(b);XQ(C)
  • Actual
    • R(A);
    • Threat
      • QAB1(C),XS(b)
    • Vars
      • K(c);N_GUARD,P_SPINS(b),S_FLIGHT::S(D)
      • K(c);N_GUARD,P-FLIGHT,P_SPINS(b),S_CUTP(e)::QAR2(C)
      • S(b);XP(B)::S(D),XS(b)
      • S(b);::P(B)
      • S(b);SBLOCK::S(I)
      • P(e);OGATEB,SBLOCK::QAB(C)
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