MESON Chess Problem Database

Problem Display
PID: 80954 (rbR4K/pb1R1NQ1/p3p2p/P2pP2q/3k4/2Np4/3P2B1/6r1 w - - 0 1)

Clark, Cecil Henry Douglas

The Field, 1950

(First published on Sat Mar 18 1950)

rbR4K/pb1R1NQ1/p3p2p/P2pP2q/3k4/2Np4/3P2B1/6r1

#2

10 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Qg4
      • 2.Qxg4#
    • 1...Qh1
      • 2.Qg4#
  • Keys
    • 1.Bxd5!
      • threat
        • 2.Rc4#
        • 2.Qxg1#
      • 1...Qxf7
        • 2.Rc4#
      • 1...Qxe5
        • 2.Rc4#
      • 1...Rxg7
        • 2.Rc4#
      • 1...Bxd5
        • 2.Qxg1#
      • 1...Bxc8
        • 2.Qxg1#
      • 1...Bxe5
        • 2.Bxb7#
      • 1...exd5
        • 2.Qxg1#
      • 1...Bc6
        • 2.Qxg1#
      • 1...Bc7
        • 2.Qxg1#
      • 1...Qd1
        • 2.Rc4#
      • 1...Qe2
        • 2.Rc4#
      • 1...Qf3
        • 2.Rc4#
      • 1...Qg4
        • 2.Rc4#
      • 1...Qg6
        • 2.Rc4#
      • 1...Qh1
        • 2.Rc4#
      • 1...Qh2
        • 2.Rc4#
      • 1...Qh3
        • 2.Rc4#
      • 1...Qh4
        • 2.Rc4#
      • 1...Qf5
        • 2.Rc4#
      • 1...Qg5
        • 2.Rc4#
      • 1...Ra1
        • 2.Rc4#
      • 1...Rb1
        • 2.Rc4#
      • 1...Rc1
        • 2.Rc4#
      • 1...Rd1
        • 2.Rc4#
      • 1...Re1
        • 2.Rc4#
      • 1...Rf1
        • 2.Rc4#
      • 1...Rh1
        • 2.Rc4#
      • 1...Rg2
        • 2.Rc4#
      • 1...Rg3
        • 2.Rc4#
      • 1...Rg4
        • 2.Rc4#
      • 1...Rg5
        • 2.Rc4#
      • 1...Rg6
        • 2.Rc4#
      • 1...Bd6
        • 2.Qxg1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 31
    • REMOVED MATES = 0
  • Sets
    • Q(e);N_GUARD::QAR(H),XQ(e)
    • Q(e);N_GUARD::QAR(H)
  • Actual
    • B(B);XP(d)
    • Threat
      • DUALS(2)
    • Vars
      • Q(e);XS(G)::R1(I)
      • Q(e);P_PINQ(H),P_SPINQ(e),XP(E)::R1(I)
      • R(a);XQ(H)::R1(I)
      • B(j);P_SPINB(j),XB(B)::QAB(H),XR(a)
      • B(j);XR(I)::QAB(H),XR(a)
      • B(l);N_GUARD,P_PINQ(H),P_PINR(I),P_SPINB(l),XP(E)::R(F)+B(B),XB(j)
      • P(g);P_SPINP(g),XB(B)::QAB(H),XR(a)
      • B(j);::QAB(H),XR(a)
      • B(l);P_PINR(I)::QAB(H),XR(a)
      • Q(e);::R1(I)
      • R(a);::R1(I)
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