MESON Chess Problem Database

Problem Display
PID: 277759 (5B2/5N1B/2Qp1p1R/pp3rr1/3k2n1/R3ppNn/5P2/K7 w - - 0 1)

Andrew, Frederick William

The Problemist, 1934

5B2/5N1B/2Qp1p1R/pp3rr1/3k2n1/R3ppNn/5P2/K7

#2

9 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rf4
      • 2.Rd3#
    • 1...Rc5
      • 2.Qe4#
    • 1...Rd5
      • 2.Rd3#
      • 2.Qc3#
    • 1...Re5
      • 2.Rd3#
    • 1...Rg6
      • 2.Sxf5#
    • 1...Rg7
      • 2.Sxf5#
    • 1...Rg8
      • 2.Sxf5#
    • 1...Sh2
      • 2.fxe3#
    • 1...Se5
      • 2.fxe3#
    • 1...Sxh6
      • 2.fxe3#
    • 1...d5
      • 2.Qc3#
      • 2.Qc5#
  • Tries
    • 1.Qxd6+?
      • 1...Kc4
        • 2.Qd3#
      • 1...Rd5!
  • Keys
    • 1.Se5!
      • threat
        • 2.Qxd6#
      • 1...Kxe5
        • 2.Qe4#
        • 2.Qxd6#
      • 1...Rxe5
        • 2.Rd3#
      • 1...Sxe5
        • 2.fxe3#
      • 1...dxe5
        • 2.Qe4#
        • 2.Qc5#
      • 1...fxe5
        • 2.Rxd6#
      • 1...Sf4
        • 2.Sxf3#
      • 1...d5
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • R(h);::R1(C)
    • R(h);SBLOCK::QAR1(E)
    • R(i);N_GUARD::S(D),XR(h)
    • S(e);N_GUARD::P(B),XP(a)
    • S(e);N_GUARD,XR(F)::P(B),XP(a)
  • Tries
    • Try
      • Q(E);CHECK,XP(j)
      • Vars
        • K(d);OGATE,P-FLIGHT::QAB1(E)
      • Refutation
        • R(h);P_SPINR(h)
  • Actual
    • S(G);
    • Threat
      • QAR2(E),XP(j)
    • Vars
      • R(h);SBLOCK,XS(G)::R1(C)
      • S(e);N_GUARD,SBLOCK,XS(G)::P(B),XP(a)
      • P(k);OGATE,SBLOCK,XS(G)::R(F),XP(j)
      • S(c);S_CUTR(h)::S(G),XP(b)
      • P(j);SBLOCK::QAB1(E)
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