MESON Chess Problem Database

Problem Display
PID: 77313 (7B/1Bn5/7p/3qPpp1/3Nk1bR/r3N2r/1b1QP3/n2K1R2 w - - 0 1)

Pelle, Charles

3rd Prize, Pat TT, 1938

7B/1Bn5/7p/3qPpp1/3Nk1bR/r3N2r/1b1QP3/n2K1R2

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Ra2
      • 2.Qd3#
    • 1...Rd3
      • 2.Qxd3#
    • 1...Ra4
      • 2.Qd3#
    • 1...Ra5
      • 2.Qd3#
    • 1...Ra6
      • 2.Qd3#
    • 1...Ra7
      • 2.Qd3#
    • 1...Ra8
      • 2.Qd3#
    • 1...Bc3
      • 2.Qd3#
    • 1...Sb3
      • 2.Qd3#
    • 1...Sb5
      • 2.Bxd5#
    • 1...Sa6
      • 2.Bxd5#
    • 1...Se6
      • 2.Bxd5#
    • 1...Sa8
      • 2.Bxd5#
    • 1...Se8
      • 2.Bxd5#
  • Keys
    • 1.Se6!
      • threat
        • 2.Sc5#
      • 1...Sxe6
        • 2.Bxd5#
      • 1...Rc3
        • 2.Qd4#
      • 1...Rd3
        • 2.Qxd3#
      • 1...Ra5
        • 2.Qd3#
      • 1...Rf3
        • 2.exf3#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Sb3
        • 2.Qd3#
      • 1...Sa6
        • 2.Bxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 9
  • Sets
    • R(c);N_GUARD::QAB1(C)
    • R(c);N_GUARD,P_PINQ(C)::QAB1(C),XR(c)
    • B(b);S_CUTR(c)::QAB1(C)
    • S(a);S_CUTR(c)::QAB1(C)
    • S(k);N_GUARD::B(I),XQ(g)
  • Actual
    • S(F);P_SPINQ(C)
    • Threat
      • S(F)
    • Vars
      • S(k);N_GUARD,XS(F)::B(I),XQ(g)
      • R(c);S_CUTB(b)::QAR1(C)
      • R(c);N_GUARD::QAB1(C),XR(c)
      • R(c);N_GUARD::QAB1(C)
      • R(d);N_PINP(D)::P(D),XR(d)
      • B(b);N_GUARD,N_PINQ(C)::QAR1(C),XB(b)
      • S(a);S_CUTR(c)::QAB1(C)
      • S(k);N_GUARD::B(I),XQ(g)
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