MESON Chess Problem Database

Problem Display
PID: 8074 (8/3p2pK/N2n2Q1/4p3/N1pk1n1R/1p1q4/8/2BR3B w - - 0 1)

Rice, John Michael

Chess Problems for Solving, 1995

8/3p2pK/N2n2Q1/4p3/N1pk1n1R/1p1q4/8/2BR3B

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd1
      • 2.Qxd6#
    • 1...Se4
      • 2.Qxe4#
    • 1...Sb5
      • 2.Qe4#
    • 1...Sf5
      • 2.Qb6#
    • 1...Sb7
      • 2.Qe4#
    • 1...Sf7
      • 2.Qe4#
    • 1...Sc8
      • 2.Qe4#
    • 1...Se8
      • 2.Qe4#
    • 1...c3
      • 2.Qxd3#
  • Tries
    • 1.Bb2+?
      • 1...c3
        • 2.Qxd3#
      • 1...Ke3!
    • 1.Rxf4+?
      • 1...Se4
        • 2.Qxe4#
        • 2.Qd6#
      • 1...e4
        • 2.Qxd6#
      • 1...exf4!
  • Keys
    • 1.Sb4!
      • 1...Qxd1
        • 2.Qxd6#
      • 1...Qd2
        • 2.Qg1#
      • 1...c3
        • 2.Qxd3#
      • 1...e4
        • 2.Qxg7#
      • 1...Se4
        • 2.Qxe4#
      • 1...Sb5
        • 2.Qe4#
      • 1...Sf5
        • 2.Qb6#
      • 1...Sb7
        • 2.Qe4#
      • 1...Sf7
        • 2.Qe4#
      • 1...Sc8
        • 2.Qe4#
      • 1...Se8
        • 2.Qe4#
      • 1...b2
        • 2.Sc2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • Q(b);N_PINQ(G),N_SPINQ(b),XR(B)::QAR2(G),XS(g)
    • S(g);N_GUARD,N_PINQ(G),N_SPINS(e)::QAR1(G),XS(g)
    • S(g);N_GUARD::QAR1(G)
    • S(g);N_PINQ(G)::QAB(G)
    • P(c);N_GUARD::QAR1(G),XQ(b)
  • Tries
    • Try
      • B(A);CHECK
      • Vars
        • P(c);P_SPINP(c)::QAR1(G),XQ(b)
      • Refutation
        • K(d);N_SPINQ(b),N_SPINS(e),S_FLIGHT
    • Try
      • R(E);CHECK,XS(e)
      • Vars
        • P(f);N_PINQ(G),P_SPINP(f)::QAR2(G),XS(g)
      • Refutation
        • P(f);XR(E)
  • Actual
    • S(F);
    • Vars
      • Q(b);N_PINQ(G),N_SPINQ(b),XR(B)::QAR2(G),XS(g)
      • Q(b);N_PINQ(G)::QAB(G)
      • P(c);N_GUARD::QAR1(G),XQ(b)
      • P(f);N_PINQ(G),N_SPINS(e)::QAB(G),XP(i)
      • S(g);N_GUARD,N_PINQ(G),N_SPINS(e)::QAR1(G),XS(g)
      • S(g);N_GUARD::QAR1(G)
      • S(g);N_PINQ(G)::QAB(G)
      • P(a);N_GUARD::S(F)
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