MESON Chess Problem Database

Problem Display
PID: 49710 (8/1B1pP1K1/2rp3n/b7/3N4/4kPB1/bQ1pp3/3RN3 w - - 0 1)

Rice, John Michael

Sunday Citizen, 1966

8/1B1pP1K1/2rp3n/b7/3N4/4kPB1/bQ1pp3/3RN3

#2

9 + 9

5174 Chess Problem Spectrum 2003

SOLUTION

  • SOUND
  • Sets
    • 1...Rc2
      • 2.Sdxc2#
    • 1...Rc3
      • 2.Qxd2#
    • 1...Rc4
      • 2.e8Q#
      • 2.e8R#
    • 1...Ra6
      • 2.Sdc2#
    • 1...Rb6
      • 2.Sdc2#
    • 1...Bc4
      • 2.Sdc2#
    • 1...Bb6
      • 2.Qxd2#
    • 1...Bc7
      • 2.Qxd2#
    • 1...Bd8
      • 2.Qxd2#
    • 1...Sg4
      • 2.Sf5#
    • 1...Sf5+
      • 2.Sxf5#
    • 1...Sf7
      • 2.Sf5#
    • 1...Sg8
      • 2.Sf5#
    • 1...dxe1S
      • 2.Qxe2#
    • 1...dxe1B
      • 2.Qxe2#
  • Tries
    • 1.Rxd2?
      • threat
        • 2.Sg2#
        • 2.Rxe2#
        • 2.Rd3#
      • 1...Sf5+
        • 2.Sxf5#
      • 1...Rc2
        • 2.Rd3#
      • 1...Rc3
        • 2.Sg2#
      • 1...Bb1
        • 2.Sg2#
        • 2.Rxe2#
      • 1...Bc4
        • 2.Sg2#
      • 1...Bc3
        • 2.Sg2#
        • 2.Rd3#
      • 1...Bxd2!
  • Keys
    • 1.Ba6!
      • threat
        • 2.Sg2#
      • 1...Sf5+
        • 2.Sxf5#
      • 1...Rxa6
        • 2.Sdc2#
      • 1...dxe1Q
        • 2.Rd3#
      • 1...dxe1S
        • 2.Qxe2#
      • 1...dxe1B
        • 2.Rd3#
        • 2.Qxe2#
      • 1...dxe1R
        • 2.Rd3#
      • 1...Rc3
        • 2.Qxd2#
      • 1...Bc3
        • 2.Sc2#
      • 1...Rc4
        • 2.e8Q#
        • 2.e8R#
      • 1...Bc4
        • 2.Sdc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 9
  • Sets
    • R(f);N_GUARD::S(F),XR(f)
    • R(f);S_CUTB(e)::QAB1(C),XP(b)
    • R(f);S_CUTB(a)::P=Q
    • R(f);N_GUARD::S(F)
    • B(a);S_CUTR(f)::S(F)
    • B(e);N_GUARD::QAB1(C),XP(b)
    • S(h);N_GUARD::S(F)
    • S(h);CHECK,N_GUARD::S(F),XS(h)
    • P(b);OGATE,XS(B)::QAR1(C),XP(c)
  • Tries
    • Try
      • R(A);XP(b)
      • Threat
        • DUALS(3)
      • Vars
        • S(h);CHECK,N_GUARD::S(F),XS(h)
        • R(f);::R1(A)
        • R(f);::S(B)
        • B(a);::S(B)
      • Refutation
        • B(e);XR(A)
  • Actual
    • B(G);
    • Threat
      • S(B)
    • Vars
      • S(h);CHECK,N_GUARD::S(F),XS(h)
      • R(f);N_GUARD,XB(G)::S(F)
      • P(b);OGATE,XS(B)::R1(A)
      • P(b);OGATE,XS(B)::QAR1(C),XP(c)
      • R(f);S_CUTB(e)::QAB1(C),XP(b)
      • B(e);P_PINS(F),S_CUTR(f)::S(B)
      • R(f);S_CUTB(a)::P=Q
      • B(a);S_CUTR(f)::S(F)
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