MESON Chess Problem Database

Problem Display
PID: 125900 (2KnB3/2P1p3/4k1n1/b1P4R/p2P3B/2N1pNp1/3qr2r/Q7 w - - 0 1)

Sim, Malcolm

Christian Science Monitor, 1953

2KnB3/2P1p3/4k1n1/b1P4R/p2P3B/2N1pNp1/3qr2r/Q7

#2

10 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qc1
      • 2.d5#
    • 1...Qe1
      • 2.d5#
    • 1...Qxc3
      • 2.d5#
    • 1...Qb2
      • 2.d5#
    • 1...Qc2
      • 2.d5#
    • 1...Qxd4
      • 2.Sxd4#
    • 1...Bxc3
      • 2.cxd8S#
    • 1...Bb4
      • 2.cxd8S#
    • 1...Sf4
      • 2.Re5#
    • 1...Se5
      • 2.Rxe5#
    • 1...Sf8
      • 2.Re5#
    • 1...Sh8
      • 2.Re5#
    • 1...Sf7
      • 2.Bd7#
  • Tries
    • 1.Rf5?
      • threat
        • 2.Bd7#
      • 1...Qxd4
        • 2.Sxd4#
      • 1...Se5
        • 2.Rxe5#
      • 1...Sf8
        • 2.Re5#
      • 1...Kxf5!
  • Keys
    • 1.Qf1!
      • threat
        • 2.Sg5#
      • 1...Qxc3
        • 2.d5#
      • 1...Qxd4
        • 2.Sxd4#
      • 1...Bxc3
        • 2.cxd8S#
      • 1...Ref2
        • 2.Qc4#
      • 1...Rhf2
        • 2.Qh3#
      • 1...Sf4
        • 2.Re5#
      • 1...Sf7
        • 2.Bd7#

This is a version of 124396

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • Q(a);N_GUARD::P(D)
    • Q(a);N_GUARD,XS(B)::P(D)
    • Q(a);XP(D)::S(C),XQ(a)
    • B(g);N_GUARD,XS(B)::PXS(k)=S
    • B(g);N_GUARD::PXS(k)=S
    • S(i);N_GUARD::R1(G)
    • S(i);N_GUARD::R1(G),XS(i)
    • S(k);SBLOCK::B(J)
  • Tries
    • Try
      • R(G);
      • Threat
        • B(J)
      • Vars
        • Q(a);XP(D)::S(C),XQ(a)
        • S(i);N_GUARD::R1(G),XS(i)
        • S(i);N_GUARD::R1(G)
      • Refutation
        • K(h);S_FLIGHT,XR(G)
  • Actual
    • Q(A);
    • Threat
      • S(C)
    • Vars
      • Q(a);N_GUARD,XS(B)::P(D)
      • Q(a);XP(D)::S(C),XQ(a)
      • B(g);N_GUARD,XS(B)::PXS(k)=S
      • R(b);OGATE::QAB(A)
      • R(c);N_GUARD::QAB(A)
      • S(i);N_GUARD::R1(G)
      • S(k);SBLOCK::B(J)
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