MESON Chess Problem Database

Problem Display
PID: 124353 (8/4Rp1B/1p2qp2/nKQ2r2/1p2k2n/1N1N1b2/2PR1P1B/3r4 w - - 0 1)

Moore, Robert Clyde

Northwest Chess, 1976

8/4Rp1B/1p2qp2/nKQ2r2/1p2k2n/1N1N1b2/2PR1P1B/3r4

#2

10 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd2
      • 2.Sxd2#
    • 1...Sg2
      • 2.Bxf5#
      • 2.Qxf5#
    • 1...bxc5
      • 2.Sdxc5#
  • Tries
    • 1.Se1?
      • threat
        • 2.Qd5#
      • 1...Be2+
        • 2.Rxe2#
      • 1...Rxd2
        • 2.Sxd2#
      • 1...bxc5
        • 2.Sxc5#
      • 1...Sg6!
  • Keys
    • 1.Se5!
      • threat
        • 2.Qe3#
        • 2.Qd4#
      • 1...Qc4+
        • 2.Sxc4#
      • 1...Qd7+
        • 2.Sxd7#
      • 1...Qc6+
        • 2.Sxc6#
      • 1...Be2+
        • 2.Rxe2#
      • 1...Qxb3
        • 2.Sc4#
        • 2.Qd4#
      • 1...Qxe5
        • 2.Qd5#
      • 1...Rxd2
        • 2.Sxd2#
      • 1...Sxb3
        • 2.Qe3#
      • 1...bxc5
        • 2.Sxc5#
      • 1...fxe5
        • 2.Qe3#
      • 1...Qd5
        • 2.Qxd5#
      • 1...Qd6
        • 2.Qe3#
      • 1...Re1
        • 2.Rd4#
        • 2.Qd4#
      • 1...Sg2
        • 2.Qd4#
      • 1...Sc4
        • 2.Qd4#
      • 1...Sc6
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 12
    • REMOVED MATES = 0
  • Sets
    • R(a);XR(B)::S(E),XR(a)
    • P(h);XQ(H)::S(F),XP(h)
  • Tries
    • Try
      • S(F);
      • Threat
        • QAB1(H)
      • Vars
        • B(b);CHECK,N_GUARD::R(B),XB(b)
        • R(a);XR(B)::S(E),XR(a)
        • P(h);XQ(H)::S(E),XP(h)
      • Refutation
        • S(e);N_SPINR(g)
  • Actual
    • S(F);N_PINQ(i),N_SPINQ(H)
    • Threat
      • DUALS(2)
    • Vars
      • Q(i);CHECK::R(I)+S(F),XQ(i)
      • B(b);CHECK,N_GUARD::R(B),XB(b)
      • Q(i);N_GUARD,P_PINQ(H),P_SPINQ(i),XS(F)::QAB1(H)
      • R(a);XR(B)::S(E),XR(a)
      • S(f);XS(E)::QAR1(H)
      • P(h);XQ(H)::S(E),XP(h)
      • P(j);XS(F)::QAR1(H)
      • Q(i);N_GUARD,P_PINQ(H)::QAB1(H),XQ(i)
      • Q(i);::QAR1(H)
      • S(e);::QAR1(H)
      • S(f);::QAR1(H)
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