MESON Chess Problem Database

Problem Display
PID: 144857 (r2R4/1b6/1Q4Kp/p2N2p1/1p1PkNR1/5p2/3r1p1p/2bn2nq w - - 0 1)

Borders, Reginald W

Brisbane Courier, 1918

(First published on Fri May 3 1918)

r2R4/1b6/1Q4Kp/p2N2p1/1p1PkNR1/5p2/3r1p1p/2bn2nq

#2

7 + 15

14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd4
      • 2.Qe6#
    • 1...Ra6
      • 2.Re8#
    • 1...Ra7
      • 2.Re8#
    • 1...Se3
      • 2.Sf6#
  • Tries
    • 1.Sc3+?
      • 1...Sxc3
        • 2.Qe6#
      • 1...bxc3
        • 2.Qe6#
      • 1...Ke3!
  • Keys
    • 1.Qb5!
      • threat
        • 2.Se2#
        • 2.Sg2#
        • 2.Sd3#
        • 2.Sh3#
        • 2.Sh5#
        • 2.Se6#
      • 1...Ra6+
        • 2.Se6#
      • 1...Kxd4
        • 2.Sd3#
      • 1...Rxd4
        • 2.Qe8#
      • 1...Bxd5
        • 2.Sg2#
        • 2.Sxd5#
      • 1...gxf4
        • 2.Rxf4#
      • 1...Qg2
        • 2.Sxg2#
      • 1...Ra2
        • 2.Qd3#
      • 1...Rb2
        • 2.Qd3#
      • 1...Rc2
        • 2.Qd3#
      • 1...Re2
        • 2.Qd3#
      • 1...Rd3
        • 2.Qxd3#
      • 1...Bc8
        • 2.Se6#
      • 1...Se3
        • 2.Sf6#
      • 1...Se2
        • 2.Sxe2#
      • 1...Sh3
        • 2.Sxh3#
      • 1...h5
        • 2.Sxh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 12
    • REMOVED MATES = 1
  • Sets
    • R(e);SBLOCK,XP(A)::QAR2(E)
    • R(o);N_GUARD,P_PINQ(E)::R(G)
    • R(o);N_GUARD::R(G)
    • S(b);SBLOCK::S(D)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • S(b);XS(D)::QAR2(E)
        • P(i);XS(D)::QAR2(E)
      • Refutation
        • K(j);P-FLIGHT
  • Actual
    • Q(E);
    • Threat
      • DUALS(6)
    • Vars
      • R(o);CHECK::R(C)+S(B)
      • K(j);P-FLIGHT,XP(A)::R(C)+S(B)
      • R(e);SBLOCK,XP(A)::QAR(E)
      • P(l);OGATE,P_SPINP(l),XS(B)::R1(C),XP(l)
      • Q(d);::R(C)+S(B),XQ(d)
      • R(e);N_GUARD::QAB1(E)
      • R(e);N_GUARD::QAB1(E),XR(e)
      • B(n);::R(C)+S(B)
      • S(b);SBLOCK::S(D)
      • S(c);::R(C)+S(B),XS(c)
      • P(m);::R(C)+S(B),XP(m)
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