MESON Chess Problem Database

Problem Display
PID: 55935 (K4R2/2p4q/1p4RB/8/n2pNN2/1r1rk3/8/1Qb2n1B w - - 0 1)

Commerce, DD

Dobbs, Gilbert S

5th Prize, Brisbane Courier, 1914-1915

K4R2/2p4q/1p4RB/8/n2pNN2/1r1rk3/8/1Qb2n1B

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rb2
      • 2.Qxd3#
    • 1...Rb4
      • 2.Qxd3#
    • 1...Rb5
      • 2.Qxd3#
    • 1...Bb2
      • 2.Qe1#
    • 1...Ba3
      • 2.Qe1#
    • 1...Sg3
      • 2.Rxg3#
    • 1...Sc3
      • 2.Qxd3#
  • Tries
    • 1.Sxd3+?
      • 1...Ke2
        • 2.Bf3#
      • 1...Qxh6!
    • 1.Qxc1+?
      • 1...Sd2
        • 2.Rg3#
        • 2.Qe1#
        • 2.Qg1#
      • 1...Rd2!
  • Keys
    • 1.Rg2!
      • threat
        • 2.Re2#
      • 1...Qxe4+
        • 2.Sd5#
      • 1...Kf3
        • 2.Rg3#
      • 1...Kxe4
        • 2.Re2#
      • 1...Rb2
        • 2.Qxd3#
      • 1...Rd2
        • 2.Sd5#
      • 1...Sg3
        • 2.Rxg3#
      • 1...Sc3
        • 2.Qxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • R(c);N_GUARD::QAR1(A),XR(d)
    • B(a);OGATE::QAR2(A)
    • S(b);N_GUARD::R(E),XS(b)
    • S(f);S_CUTR(c)::QAR1(A),XR(d)
  • Tries
    • Try
      • S(D);CHECK,XR(d)
      • Vars
        • K(e);P-FLIGHT::B(B)
      • Refutation
        • Q(j);XB(F)
    • Try
      • Q(A);CHECK,XB(a)
      • Refutation
        • R(d);P_SPINR(d)
  • Actual
    • R(E);
    • Threat
      • R1(E)
    • Vars
      • Q(j);CHECK,SBLOCK,XS(C)::B(F)+S(D),DCHECK
      • K(e);P-FLIGHT::B(B)+R(E),DCHECK
      • K(e);P-FLIGHT,P_SPINR(d),XS(C)::B(B)+R(E),DCHECK
      • R(c);N_GUARD::QAR1(A),XR(d)
      • R(d);::B(F)+S(D),DCHECK
      • S(b);N_GUARD::R(E),XS(b)
      • S(f);S_CUTR(c)::QAR1(A),XR(d)
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Developed and maintained by Brian Stephenson.
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