MESON Chess Problem Database

Problem Display
PID: 232081 (8/3BK3/n7/rn6/1R1p4/k2P4/r1P1N3/4Q3 w - - 0 1)

Slater, George James

Pen & Pencil, 1889

(First published on Fri Aug 23 1889)

8/3BK3/n7/rn6/1R1p4/k2P4/r1P1N3/4Q3

#2

7 + 6

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ra4
      • 2.Rb3#
    • 1...Sc3
      • 2.Rb3#
    • 1...Sd6
      • 2.Rb3#
    • 1...Sa7
      • 2.Rb3#
    • 1...Sbc7
      • 2.Rb3#
  • Tries
    • 1.Rb1?
      • threat
        • 2.Qxa5#
      • 1...Ra4
        • 2.Rb3#
      • 1...Sc3
        • 2.Rb3#
      • 1...Sb4
        • 2.Qxb4#
      • 1...Sc5
        • 2.Qb4#
      • 1...Ka4!
    • 1.Rxb5?
      • threat
        • 2.Rb3#
        • 2.Qxa5#
      • 1...Ka4
        • 2.Rxa5#
        • 2.Qxa5#
      • 1...Rxc2
        • 2.Qxa5#
      • 1...Ra1
        • 2.Qxa5#
        • 2.Qxa1#
      • 1...Rb2
        • 2.Rxa5#
        • 2.Qxa5#
      • 1...Sb4
        • 2.Qxb4#
      • 1...Ra4
        • 2.Rb3#
      • 1...Sc5
        • 2.Qb4#
      • 1...Rxb5!
    • 1.Qc3+?
      • 1...Sxc3
        • 2.Rb3#
      • 1...dxc3!
    • 1.Qb1?
      • threat
        • 2.Qb3#
      • 1...Rb2
        • 2.Qxb2#
      • 1...Sc5!
    • 1.Qc1+?
      • 1...Rb2
        • 2.Qxb2#
      • 1...Kxb4!
  • Keys
    • 1.Rb2!
      • 1...Kxb2
        • 2.Qc1#
      • 1...Ka4
        • 2.Rxa2#
      • 1...Rxb2
        • 2.Qxa5#
      • 1...Ra1
        • 2.Qxa1#
      • 1...Ra4
        • 2.Rb3#
      • 1...Sc3
        • 2.Rb3#
      • 1...Sd6
        • 2.Rb3#
      • 1...Sa7
        • 2.Rb3#
      • 1...Sbc7
        • 2.Rb3#
      • 1...Sb4
        • 2.Qxb4#
      • 1...Sc5
        • 2.Qb4#
      • 1...Sac7
        • 2.Qb4#
      • 1...Sb8
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • R(d);SBLOCK::R1(E)
    • S(e);::R1(E)
  • Tries
    • Try
      • R(E);
      • Threat
        • QAR2(A),XR(d)
      • Vars
        • R(d);SBLOCK::R1(E)
        • S(e);::R1(E)
        • S(f);N_GUARD::QAB1(A),XS(f)
        • S(f);N_GUARD::QAB1(A)
      • Refutation
        • K(b);P-FLIGHT,P_SPINS(e)
    • Try
      • R(E);XS(e)
      • Threat
        • DUALS(2)
      • Vars
        • R(a);XP(B)::QAR2(A),XR(d)
        • S(f);N_GUARD::QAB1(A),XS(f)
        • R(d);::R1(E)
        • S(f);N_GUARD::QAB1(A)
      • Refutation
        • R(d);XR(E)
    • Try
      • Q(A);CHECK
      • Vars
        • S(e);XQ(A)::R1(E)
      • Refutation
        • P(c);XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • R(a);N_GUARD::QAB1(A),XR(a)
      • Refutation
        • S(f);
    • Try
      • Q(A);CHECK
      • Vars
        • R(a);N_GUARD,P_SPINR(a)::QAB1(A),XR(a)
      • Refutation
        • K(b);S_FLIGHT,XR(E)
  • Actual
    • R(E);
    • Vars
      • K(b);OGATEB,S_FLIGHT,XR(E)::QAB1(A)
      • K(b);P-FLIGHT,P_SPINS(e)::R(E),XR(a)
      • R(a);SBLOCK,XR(E)::QAR2(A),XR(d)
      • R(a);OGATEB::QAR2(A),XR(a)
      • R(d);SBLOCK::R1(E)
      • S(e);::R1(E)
      • S(f);N_GUARD::QAB1(A),XS(f)
      • S(f);N_GUARD::QAB1(A)
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