MESON Chess Problem Database

Problem Display
PID: 151569 (6q1/BP4n1/K2RbQ2/2b1r1p1/2p1p3/N3kBP1/1R3N2/2n2r2 w - - 0 1)

Easter, Norris

Tijdschrift vd NSB, 1933

6q1/BP4n1/K2RbQ2/2b1r1p1/2p1p3/N3kBP1/1R3N2/2n2r2

#2

10 + 11

102 Probleemblad 2013
5454 Near Snap 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Sxd1#
    • 1...Rd5
      • 2.Sxc4#
    • 1...Bd4
      • 2.Bxd4#
    • 1...Bg4
      • 2.Sxg4#
    • 1...Bd5
      • 2.Bxc5#
    • 1...Bf7
      • 2.Sg4#
    • 1...Sa2
      • 2.Re2#
    • 1...Se2
      • 2.Rxe2#
    • 1...Sb3
      • 2.Re2#
    • 1...Sd3
      • 2.Re2#
    • 1...exf3
      • 2.Qxe5#
    • 1...g4
      • 2.Qf4#
  • Keys
    • 1.Bd1!
      • threat
        • 2.Sc2#
      • 1...Rxd1
        • 2.Sxd1#
      • 1...Rxf2
        • 2.Qxf2#
      • 1...Bd5
        • 2.Bxc5#
      • 1...Rd5
        • 2.Sxc4#
      • 1...Rf5
        • 2.Sg4#
      • 1...Bd4
        • 2.Bxd4#
      • 1...Bf5
        • 2.Qxg5#
      • 1...Sd3
        • 2.Re2#
      • 1...Sf5
        • 2.Sg4#

This anticipates 11300(1937)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • R(b);N_GUARD::S(B),XR(b)
    • R(g);S_CUTB(i)::S(C),XP(d)
    • B(f);OGATE::B(I),XB(f)
    • B(i);N_GUARD::S(B),XB(i)
    • B(i);S_CUTR(g)::B(I),XB(f)
    • B(i);N_GUARD::S(B)
    • S(a);N_GUARD::R1(A)
    • S(a);N_GUARD::R1(A),XS(a)
    • P(e);OGATEB,SBLOCK,XB(D)::QAR2(H),XR(g)
    • P(h);N_GUARD::QAB1(H)
  • Actual
    • B(D);
    • Threat
      • S(C)
    • Vars
      • R(b);XB(D)::S(B),XR(b)
      • R(b);OGATE,XS(B)::QAB1(H),XR(b)
      • B(i);S_CUTR(g)::B(I),XB(f)
      • R(g);S_CUTB(i)::S(C),XP(d)
      • R(g);S_CUTB(i)::S(B)
      • B(f);OGATE::B(I),XB(f)
      • B(i);S_CUTR(g)::QAB(H),XP(h)
      • S(a);N_GUARD::R1(A)
      • S(j);S_CUTB(i)::S(B)
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