MESON Chess Problem Database

Problem Display
PID: 275282 (3rn3/3pK2b/8/4kp2/4rN2/5P2/p2Qn3/4R1B1 w - - 0 1)

Dobbs, Gilbert S

British Chess Magazine, 1935

3rn3/3pK2b/8/4kp2/4rN2/5P2/p2Qn3/4R1B1

#2

6 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Re3
      • 2.Qxe3#
    • 1...Rd4
      • 2.Bxd4#
      • 2.Qxd4#
    • 1...Bg6
      • 2.Sxg6#
    • 1...Bg8
      • 2.Sg6#
    • 1...Sc1
      • 2.Bd4#
    • 1...Sc3
      • 2.Bd4#
    • 1...Sg3
      • 2.Bd4#
    • 1...Sd4
      • 2.Bxd4#
    • 1...Sxf4
      • 2.Qd4#
    • 1...Sd6
      • 2.Qxd6#
    • 1...Sf6
      • 2.Qd6#
    • 1...Sc7
      • 2.Qd6#
    • 1...Sg7
      • 2.Qd6#
    • 1...d5
      • 2.Sd3#
  • Tries
    • 1.Qa5+?
      • 1...d5
        • 2.Sd3#
      • 1...Kxf4+!
  • Keys
    • 1.Be3!
      • threat
        • 2.Qd5#
      • 1...Rxe3
        • 2.Qxe3#
      • 1...Rxf4
        • 2.Bxf4#
      • 1...Sxf4
        • 2.Bxf4#
      • 1...Rd4
        • 2.Bxd4#
      • 1...Bg8
        • 2.Sg6#
      • 1...Sc3
        • 2.Bd4#
      • 1...Sd4
        • 2.Bxd4#
      • 1...Sf6
        • 2.Qd6#
      • 1...Sc7
        • 2.Qd6#
      • 1...d5
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • R(c);OGATEB::QAR2(C),XR(c)
    • B(g);N_GUARD::S(E),XB(g)
    • B(g);N_GUARD::S(E)
    • S(b);N_GUARD,P_SPINR(c)::B(B)
    • S(b);N_GUARD,P_SPINR(c)::B(B),XS(b)
    • S(b);N_GUARD,P_SPINR(c),SBLOCK,XS(E)::QAB1(C)
    • S(i);N_GUARD::QAB1(C),XS(i)
    • S(i);N_GUARD::QAB1(C)
    • P(f);SBLOCK::S(E)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • P(f);P_SPINP(f)::S(E)
      • Refutation
        • K(d);CHECK,S_FLIGHT,XS(E)
  • Actual
    • B(B);
    • Threat
      • QAR1(C)
    • Vars
      • R(c);OGATE,XB(B)::QAR2(C),XR(c)
      • R(c);OGATE,XS(E)::B(B),XR(c)
      • S(b);OGATE,XS(E)::B(B),XS(b)
      • R(c);N_GUARD,S_CUTS(b)::B(B),XR(c)
      • B(g);N_GUARD::S(E)
      • S(b);N_GUARD,S_CUTR(c)::B(B)
      • S(b);N_GUARD,S_CUTR(c)::B(B),XS(b)
      • S(i);N_GUARD::QAB1(C)
      • P(f);SBLOCK::S(E)
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