MESON Chess Problem Database

Problem Display
PID: 18442 (8/2N1p3/3pP3/R1NP1p1p/1ppk1P1K/5Q2/1P6/7n w - - 0 1)

Rice, John Michael

Time & Tide, 1955

8/2N1p3/3pP3/R1NP1p1p/1ppk1P1K/5Q2/1P6/7n

#2

9 + 8

5174 Chess Problem Spectrum 2003

SOLUTION

  • SOUND
  • Sets
    • 1...Sf2
      • 2.Qxf2#
    • 1...Sg3
      • 2.Qf2#
    • 1...b3
      • 2.Qc3#
    • 1...c3
      • 2.Qd3#
    • 1...dxc5
      • 2.Sb5#
  • Tries
    • 1.Kh3?
      • 1...Sf2+
        • 2.Qxf2#
      • 1...dxc5
        • 2.Sb5#
      • 1...c3
        • 2.Qd3#
      • 1...Sg3
        • 2.Qf2#
      • 1...b3
        • 2.Qc3#
      • 1...h4!
    • 1.Kg5?
      • 1...dxc5
        • 2.Sb5#
      • 1...c3
        • 2.Qd3#
      • 1...Sf2
        • 2.Qxf2#
      • 1...Sg3
        • 2.Qf2#
      • 1...b3
        • 2.Qc3#
      • 1...h4!
    • 1.Kxh5?
      • 1...dxc5
        • 2.Sb5#
      • 1...c3
        • 2.Qd3#
      • 1...Sf2
        • 2.Qxf2#
      • 1...b3
        • 2.Qc3#
      • 1...Sg3+!
    • 1.Rb5?
      • 1...c3
        • 2.Qd3#
      • 1...Sf2
        • 2.Qxf2#
      • 1...Sg3
        • 2.Qf2#
      • 1...b3
        • 2.Qc3#
      • 1...dxc5!
    • 1.Qe2?
      • threat
        • 2.Qd2#
      • 1...Sf2
        • 2.Qxf2#
      • 1...c3
        • 2.Sb3#
        • 2.Qd3#
      • 1...dxc5!
  • Keys
    • 1.Ra4!
      • 1...Kxc5
        • 2.Qe3#
      • 1...dxc5
        • 2.Sb5#
      • 1...c3
        • 2.Qxc3#
      • 1...Sf2
        • 2.Qxf2#
      • 1...Sg3
        • 2.Qf2#
      • 1...b3
        • 2.Sxb3#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAB(B),XS(a)
    • S(a);N_GUARD::QAB(B)
    • P(b);N_GUARD::QAB1(B)
    • P(c);N_GUARD::QAR1(B)
    • P(g);SBLOCK,XS(F)::S(I)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • S(a);CHECK,N_GUARD::QAB(B),XS(a)
        • P(g);SBLOCK,XS(F)::S(I)
        • P(c);N_GUARD::QAR1(B)
        • S(a);N_GUARD::QAB(B)
        • P(b);N_GUARD::QAB1(B)
      • Refutation
        • P(f);
    • Try
      • K(D);S_FLIGHT
      • Vars
        • P(g);SBLOCK,XS(F)::S(I)
        • P(c);N_GUARD::QAR1(B)
        • S(a);N_GUARD::QAB(B),XS(a)
        • S(a);N_GUARD::QAB(B)
        • P(b);N_GUARD::QAB1(B)
      • Refutation
        • P(f);
    • Try
      • K(D);P-FLIGHT,XP(f)
      • Vars
        • P(g);SBLOCK,XS(F)::S(I)
        • P(c);N_GUARD::QAR1(B)
        • S(a);N_GUARD::QAB(B),XS(a)
        • P(b);N_GUARD::QAB1(B)
      • Refutation
        • S(a);CHECK
    • Try
      • R(E);
      • Vars
        • P(c);N_GUARD::QAR1(B)
        • S(a);N_GUARD::QAB(B),XS(a)
        • S(a);N_GUARD::QAB(B)
        • P(b);N_GUARD::QAB1(B)
      • Refutation
        • P(g);XS(F)
    • Try
      • Q(B);
      • Threat
        • QAR2(B)
      • Vars
        • S(a);N_GUARD::QAB(B),XS(a)
      • Refutation
        • P(g);XS(F)
  • Actual
    • R(E);
    • Vars
      • K(d);S_FLIGHT,XS(F)::QAB(B)
      • P(g);SBLOCK,XS(F)::S(I)
      • P(c);P_SPINP(b)::QAB1(B),XP(c)
      • S(a);N_GUARD::QAB(B),XS(a)
      • S(a);N_GUARD::QAB(B)
      • P(b);P_SPINP(c)::S(F),XP(b)
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