MESON Chess Problem Database

Problem Display
PID: 2258 (4R3/8/p2rp1B1/pp1k4/N3R3/1n5K/n1Q5/8 w - - 0 1)

Cook, Eugene Beauharnais

Source?, 0000

4R3/8/p2rp1B1/pp1k4/N3R3/1n5K/n1Q5/8

#2

6 + 8

1679 American Chess Nuts 1868

SOLUTION

  • SOUND
  • Sets
    • 1...Rd8
      • 2.Rxd8#
    • 1...Sa1
      • 2.Qc5#
    • 1...Sc1
      • 2.Qc5#
    • 1...Sd2
      • 2.Qc5#
    • 1...Sd4
      • 2.Qc5#
    • 1...Sc5
      • 2.Qxc5#
    • 1...bxa4
      • 2.Qc4#
    • 1...b4
      • 2.Qc4#
    • 1...e5
      • 2.R8xe5#
  • Tries
    • 1.Rd4+?
      • 1...Kxd4
        • 2.Qe4#
      • 1...Sxd4
        • 2.Qc5#
      • 1...Ke5!
    • 1.Re5+?
      • 1...Kd4
        • 2.Qe4#
      • 1...Kxe5!
    • 1.Rc8?
      • threat
        • 2.Qxb3#
      • 1...bxa4
        • 2.Qc4#
      • 1...Rc6
        • 2.Qxc6#
      • 1...Rd7
        • 2.Qc6#
      • 1...Rd8
        • 2.Rxd8#
        • 2.Qc6#
      • 1...Sac1
        • 2.Sc3#
      • 1...Sa1
        • 2.Rc5#
        • 2.Qd1#
        • 2.Qd3#
        • 2.Qd2#
        • 2.Qc5#
      • 1...Sbc1
        • 2.Rc5#
        • 2.Qc5#
      • 1...Sd2
        • 2.Rc5#
        • 2.Qd3#
        • 2.Qxd2#
        • 2.Qc5#
      • 1...Sd4
        • 2.Rc5#
        • 2.Qc5#
      • 1...Sc5
        • 2.Rxc5#
        • 2.Qxc5#
      • 1...Rb6!
  • Keys
    • 1.Qc7!
      • 1...bxa4
        • 2.Qc4#
      • 1...Rb6
        • 2.Sxb6#
      • 1...Rc6
        • 2.Qe5#
      • 1...Rd7
        • 2.Sb6#
        • 2.Qxd7#
      • 1...Rd8
        • 2.Sb6#
        • 2.Rxd8#
      • 1...Sac1
        • 2.Sc3#
      • 1...Sc3
        • 2.Sxc3#
      • 1...Sb4
        • 2.Sc3#
      • 1...Sa1
        • 2.Qc5#
      • 1...Sbc1
        • 2.Qc5#
      • 1...Sd2
        • 2.Qc5#
      • 1...Sd4
        • 2.Qc5#
      • 1...Sc5
        • 2.Qxc5#
      • 1...b4
        • 2.Qc4#
      • 1...e5
        • 2.R8xe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • R(g);OGATEB::R(F),XR(g)
    • S(b);N_GUARD::QAR1(A)
    • S(b);N_GUARD::QAR1(A),XS(b)
    • P(d);N_GUARD,XS(C)::QAB1(A)
    • P(d);N_GUARD::QAB1(A)
    • P(h);OGATE::R1(F),XP(h)
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • K(e);P-FLIGHT,XR(D)::QAR1(A)
        • S(b);XR(D)::QAR1(A)
      • Refutation
        • K(e);P-FLIGHT,P_SPINP(h)
    • Try
      • R(D);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR1(A)
      • Refutation
        • K(e);P-FLIGHT,P_SPINP(h),XR(D)
    • Try
      • R(F);
      • Threat
        • QAB(A),XS(b)
      • Vars
        • P(d);N_GUARD,XS(C)::QAB1(A)
        • R(g);N_GUARD::QAB1(A),XR(g)
        • R(g);N_GUARD::QAB1(A)
        • S(a);N_GUARD::S(C)
      • Refutation
        • R(g);
  • Actual
    • Q(A);
    • Vars
      • P(d);N_GUARD,XS(C)::QAB1(A)
      • R(g);N_GUARD::S(C),XR(g)
      • R(g);OGATE,SBLOCK::QAR1(A)
      • S(a);N_GUARD::S(C)
      • S(a);N_GUARD::S(C),XS(a)
      • S(b);N_GUARD::QAR1(A)
      • S(b);N_GUARD::QAR1(A),XS(b)
      • P(d);N_GUARD::QAB1(A)
      • P(h);OGATE::R1(F),XP(h)
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