MESON Chess Problem Database

Problem Display
PID: 151637 (4Q1N1/1r2Rp1K/N2P4/1p1kP2R/b7/3PB3/4pr2/4bq2 w - - 0 1)

Dawson, Thomas Rayner

South African Chess Magazine, 1935

4Q1N1/1r2Rp1K/N2P4/1p1kP2R/b7/3PB3/4pr2/4bq2

#2

10 + 9

15256 TRD Scrapbook 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Rb6
      • 2.Sc7#
    • 1...Rc7
      • 2.Sxc7#
    • 1...Rb8
      • 2.Sc7#
    • 1...Bb4
      • 2.Sxb4#
    • 1...f5
      • 2.Sf6#
  • Tries
    • 1.Qa8?
      • threat
        • 2.Qxb7#
      • 1...Kc6
        • 2.Qxb7#
      • 1...b4!
    • 1.Qc8?
      • threat
        • 2.Qxb7#
        • 2.Qc5#
      • 1...Rxe7
        • 2.Sxe7#
      • 1...Rb6
        • 2.Qc5#
      • 1...Ra7
        • 2.Qc5#
      • 1...Rd7
        • 2.Qc5#
      • 1...Rb8
        • 2.Qc5#
      • 1...Bb4
        • 2.Sxb4#
        • 2.Qxb7#
      • 1...b4
        • 2.Qc4#
        • 2.Qc5#
      • 1...Rc7!
  • Keys
    • 1.Rc7!
      • threat
        • 2.Rc5#
      • 1...Rxc7
        • 2.Sxc7#
      • 1...Bb4
        • 2.Sxb4#
      • 1...f5
        • 2.Sf6#
      • 1...f6
        • 2.Qf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(h);N_GUARD::S(E)
    • R(h);N_GUARD::S(E),XR(h)
    • B(a);N_GUARD::S(E),XB(a)
    • P(i);P_PINR(G),S_CUTR(d)::S(J)
  • Tries
    • Try
      • Q(I);P_PINR(h)
      • Threat
        • QAB(I),XR(h)
      • Vars
        • K(g);S_FLIGHT::QAB1(I),XR(h)
      • Refutation
        • P(f);
    • Try
      • Q(I);
      • Threat
        • DUALS(2)
      • Vars
        • R(h);XR(G)::S(J),XR(h)
        • R(h);::QAR1(I)
      • Refutation
        • R(h);
  • Actual
    • R(G);
    • Threat
      • R1(G)
    • Vars
      • R(h);XR(G)::S(E),XR(h)
      • B(a);N_GUARD::S(E),XB(a)
      • P(i);P_PINR(G),S_CUTR(d)::S(J)
      • P(i);P_PINR(G),S_CUTR(d)::QAB(I)
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