MESON Chess Problem Database

Problem Display
PID: 57358 (6K1/B7/2p5/3NQp1B/1p2q2n/3P4/r1P2R1P/3rk3 w - - 0 1)

Wainwright, Joseph CJ

6th HM., Brisbane Courier, 1920

6K1/B7/2p5/3NQp1B/1p2q2n/3P4/r1P2R1P/3rk3

#2

9 + 8

133 The Problemist Supplement 2006

SOLUTION

  • SOUND
  • Sets
    • 1...Qe2
      • 2.Qxe2#
    • 1...Qe3
      • 2.Qxe3#
    • 1...f4
      • 2.Qxe4#
  • Tries
    • 1.Re2+?
      • 1...Qxe2
        • 2.Qxe2#
      • 1...Kf1!
    • 1.Qc3+?
      • 1...Rd2
        • 2.Qxd2#
      • 1...bxc3!
  • Keys
    • 1.Se3!
      • threat
        • 2.Re2#
      • 1...Qg2+
        • 2.Sxg2#
      • 1...Qd5+
        • 2.Sxd5#
      • 1...Qc4+
        • 2.Sxc4#
      • 1...Qg4+
        • 2.Sxg4#
      • 1...Kxf2
        • 2.Qg3#
      • 1...Qxd3
        • 2.Sg2#
      • 1...Qxe3
        • 2.Qxe3#
      • 1...Rxc2
        • 2.Sxc2#
      • 1...Qf3
        • 2.Sg2#
      • 1...Rd2
        • 2.Rf1#
      • 1...Sf3
        • 2.Sg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 2
  • Sets
    • Q(e);OGATE::QAR1(F),XQ(e)
    • Q(e);OGATE::QAR2(F),XQ(e)
    • P(g);N_GUARD::QAR(F),XQ(e)
  • Tries
    • Try
      • R(B);CHECK,N_PINQ(e)
      • Vars
        • Q(e);OGATE,P_SPINQ(e),XR(B)::QAR1(F),XQ(e)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(F);CHECK,N_PINQ(e)
      • Vars
        • R(a);N_GUARD,P_SPINR(a)::QAB1(F),XR(a)
      • Refutation
        • P(d);XQ(F)
  • Actual
    • S(E);N_PINQ(e)
    • Threat
      • R1(B)
    • Vars
      • Q(e);CHECK::QAR(F)+S(E),DCHECK,XQ(e)
      • Q(e);CHECK::QAR(F)+S(E),XQ(e)
      • K(b);OGATEB,S_FLIGHT,XR(B)::QAB1(F)
      • Q(e);XP(D)::QAR(F)+S(E),DCHECK
      • Q(e);OGATE,P_SPINQ(e),XS(E)::QAR2(F),XQ(e)
      • R(c);XP(A)::S(E),XR(c)
      • Q(e);::QAR(F)+S(E),DCHECK
      • R(a);SBLOCK::R1(B)
      • S(f);N_GUARD::S(E)
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