MESON Chess Problem Database

Problem Display
PID: 255194 (3n1B2/2r1bn1N/1NpR4/4k2K/R3pp1p/7B/p2P1Q2/qbr5 w - - 0 1)

Clark, Robert Winslow

Western Morning News, 1921

(First published on Sat Nov 19 1921)

3n1B2/2r1bn1N/1NpR4/4k2K/R3pp1p/7B/p2P1Q2/qbr5

#2

9 + 13

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qd4
      • 2.Qxd4#
    • 1...Rd1
      • 2.Sc4#
      • 2.Qc5#
    • 1...Re1
      • 2.Sc4#
      • 2.Qc5#
    • 1...Rf1
      • 2.Sc4#
      • 2.Qc5#
    • 1...Rg1
      • 2.Sc4#
      • 2.Qc5#
    • 1...Rh1
      • 2.Sc4#
      • 2.Qc5#
    • 1...Rc3
      • 2.Qd4#
    • 1...Rc4
      • 2.Sxc4#
    • 1...Rc5
      • 2.Qxc5#
    • 1...Bc2
      • 2.Sc4#
      • 2.Qc5#
    • 1...Bxd6
      • 2.Bg7#
    • 1...Se6
      • 2.Rxe6#
    • 1...Sb7
      • 2.Re6#
    • 1...e3
      • 2.Qxf4#
    • 1...f3
      • 2.Qh2#
    • 1...c5
      • 2.Rd5#
  • Tries
    • 1.Ra5+?
      • 1...Rc5
        • 2.Sc4#
        • 2.Qxc5#
      • 1...c5
        • 2.Rd5#
      • 1...Kxd6!
    • 1.d4+?
      • 1...Qxd4
        • 2.Qxd4#
      • 1...exd4 ep
        • 2.Qxf4#
      • 1...Kxd6!
  • Keys
    • 1.Rc4!
      • threat
        • 2.Qc5#
      • 1...Kxd6
        • 2.Qc5#
      • 1...Rxc4
        • 2.Sxc4#
      • 1...Bxd6
        • 2.Bg7#
      • 1...f3
        • 2.Qh2#
      • 1...Qd4
        • 2.Qxd4#
      • 1...Se6
        • 2.Rxe6#
      • 1...Sb7
        • 2.Re6#
      • 1...e3
        • 2.Qxf4#
      • 1...c5
        • 2.Rd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • Q(a);N_GUARD::QAB1(B),XQ(a)
    • R(c);S_CUTQ(a)::QAB1(B)
    • R(c);N_GUARD::S(F),XR(c)
    • R(c);N_GUARD::QAR2(B),XR(c)
    • B(k);N_GUARD,SBLOCK,XR(G)::B(I)
    • S(m);N_GUARD::R1(G),XS(m)
    • S(m);N_GUARD::R1(G)
    • P(e);::QAB1(B),XP(f)
    • P(f);OGATEB::QAB(B)
    • P(i);N_GUARD::R1(G)
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • P(i);N_GUARD,P_SPINP(i)::R1(G)
      • Refutation
        • K(h);P_SPINB(k),S_FLIGHT,XR(G)
    • Try
      • P(A);CHECK
      • Vars
        • Q(a);OGATE,XP(A)::QAB1(B),XQ(a)
        • P(e);EP,XP(A)::QAB1(B),XP(f)
      • Refutation
        • K(h);P_SPINB(k),S_FLIGHT,XR(G)
  • Actual
    • R(D);
    • Threat
      • QAR2(B)
    • Vars
      • K(h);P_SPINB(k),S_FLIGHT,XR(G)::QAB1(B)
      • R(c);XR(D)::S(F),XR(c)
      • B(k);N_GUARD,SBLOCK,XR(G)::B(I)
      • P(f);OGATEB::QAB(B)
      • Q(a);N_GUARD::QAB1(B),XQ(a)
      • S(m);N_GUARD::R1(G),XS(m)
      • S(m);N_GUARD::R1(G)
      • P(e);::QAB1(B),XP(f)
      • P(i);N_GUARD::R1(G)
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