MESON Chess Problem Database

Problem Display
PID: 18759 (8/1n2B3/1nN3P1/pp1k1B1R/1r1P4/8/3R4/1NQ3K1 w - - 0 1)

Warton, Joseph John

Chess, 1958

8/1n2B3/1nN3P1/pp1k1B1R/1r1P4/8/3R4/1NQ3K1

#2

10 + 6

5606 The Wangling Wizards 2005

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd4
      • 2.Rxd4#
    • 1...Sc5
      • 2.Qxc5#
    • 1...Sd6
      • 2.Qc5#
    • 1...Sd8
      • 2.Qc5#
    • 1...a4
      • 2.Sxb4#
  • Tries
    • 1.Re2?
      • threat
        • 2.Bd3#
        • 2.Bh3#
        • 2.Bg4#
        • 2.Be6#
        • 2.Bd7#
        • 2.Bc8#
        • 2.Re5#
      • 1...Rc4
        • 2.Bd7#
      • 1...Sc5
        • 2.Bd7#
        • 2.Qxc5#
      • 1...Sd7
        • 2.Be6#
        • 2.Bxd7#
      • 1...Sc8
        • 2.Bd3#
        • 2.Bh3#
        • 2.Bg4#
        • 2.Be6#
        • 2.Bd7#
        • 2.Bxc8#
        • 2.Re5#
      • 1...Sd6
        • 2.Be6#
        • 2.Re5#
        • 2.Qc5#
      • 1...Sc4!
    • 1.Qc2?
      • threat
        • 2.Bh3#
        • 2.Bg4#
        • 2.Bd7#
        • 2.Bc8#
      • 1...Rc4
        • 2.Bd7#
        • 2.Qe4#
      • 1...Sc4
        • 2.Qe4#
      • 1...Sc5
        • 2.Bd7#
        • 2.Qxc5#
      • 1...Sd7
        • 2.Bxd7#
      • 1...Sc8
        • 2.Bh3#
        • 2.Bg4#
        • 2.Bd7#
        • 2.Bxc8#
      • 1...Sd6
        • 2.Qc5#
      • 1...Rxb1+!
  • Keys
    • 1.Sd8!
      • threat
        • 2.Qc6#
      • 1...Rxb1
        • 2.Bxb1#
      • 1...Rxd4
        • 2.Bd3#
      • 1...Sxd8
        • 2.Qc5#
      • 1...Rc4
        • 2.Bc2#
      • 1...Sc4
        • 2.Sc3#
      • 1...Sc5
        • 2.Qxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(a);OGATE,P_SPINR(a),XP(E)::R1(D),XR(a)
    • S(f);N_GUARD::QAR1(B),XS(f)
    • S(f);N_GUARD::QAR1(B)
    • P(b);N_GUARD::S(H),XR(a)
  • Tries
    • Try
      • R(D);
      • Threat
        • DUALS(7)
      • Vars
        • R(a);::R(G)+B(F)
      • Refutation
        • S(e);
    • Try
      • Q(B);
      • Threat
        • DUALS(4)
      • Vars
        • S(e);SBLOCK::QAB1(B)
        • S(e);::R(G)+B(F),XS(e)
        • S(f);N_GUARD::QAR1(B)
      • Refutation
        • R(a);CHECK,XS(A)
  • Actual
    • S(H);
    • Threat
      • QAB1(B)
    • Vars
      • R(a);OGATE,P_PINQ(B),XS(A)::R(G)+B(F),XR(a)
      • R(a);P_SPINR(a),SBLOCK,XP(E)::R(G)+B(F)
      • S(f);N_GUARD,XS(H)::QAR1(B)
      • R(a);SBLOCK::R(G)+B(F)
      • S(e);SBLOCK::S(A)
      • S(f);N_GUARD::QAR1(B),XS(f)
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