MESON Chess Problem Database

Problem Display
PID: 10424 (R3NK2/1p1k1p2/1Pp1p3/3n4/P2N2P1/1P1Q1P2/7B/7n w - - 0 1)

Rice, John Michael

6th HM., Probleemblad, 1964

R3NK2/1p1k1p2/1Pp1p3/3n4/P2N2P1/1P1Q1P2/7B/7n

#2

11 + 7

3174 The Two-move Chess Problem Tradition and Development 1966
3747 FIDE Album (1962-1964) 1968
5862 An ABC of Chess Problems 1970
5174 Chess Problem Spectrum 2003
56 The Problemist 2004
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sc3
      • 2.Sf6#
    • 1...Se3
      • 2.Sf6#
    • 1...Sb4
      • 2.Sf6#
    • 1...Sxb6
      • 2.Sf6#
    • 1...Sf6
      • 2.Sxf6#
    • 1...Sc7
      • 2.Sf6#
    • 1...Se7
      • 2.Sf6#
    • 1...c5
      • 2.Qb5#
    • 1...e5
      • 2.Qf5#
  • Tries
    • 1.Sc2?
      • threat
        • 2.Sf6#
      • 1...c5
        • 2.Qb5#
      • 1...e5
        • 2.Qf5#
      • 1...f6
        • 2.Sxf6#
      • 1...Sg3!
    • 1.Se2?
      • threat
        • 2.Sf6#
      • 1...c5
        • 2.Qb5#
      • 1...e5
        • 2.Qf5#
      • 1...f6
        • 2.Sxf6#
      • 1...Sg3!
    • 1.Sb5?
      • threat
        • 2.Sf6#
      • 1...cxb5
        • 2.Qxb5#
      • 1...e5
        • 2.Qf5#
      • 1...f6
        • 2.Sxf6#
      • 1...c5!
    • 1.Sf5?
      • threat
        • 2.Sf6#
      • 1...exf5
        • 2.Qxf5#
      • 1...c5
        • 2.Qb5#
      • 1...f6
        • 2.Sxf6#
      • 1...e5!
    • 1.Sxc6?
      • threat
        • 2.Se5#
      • 1...Kxc6
        • 2.Qb5#
      • 1...bxc6
        • 2.Sf6#
      • 1...e5
        • 2.Qxd5#
      • 1...f6!
  • Keys
    • 1.Sxe6!
      • threat
        • 2.Sc5#
      • 1...Kxe6
        • 2.Qf5#
      • 1...fxe6
        • 2.Sf6#
      • 1...c5
        • 2.Qxd5#

This anticipates 115206(1981), 67805(1994)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • S(b);N_GUARD::S(J)
    • S(b);N_GUARD,XP(H)::S(J)
    • S(b);N_GUARD::S(J),XS(b)
    • P(c);OGATEB::QAB(C)
    • P(d);OGATEB::QAB(C)
  • Tries
    • Try
      • S(F);P_PINS(b)
      • Threat
        • S(J)
      • Vars
        • P(c);OGATEB::QAB(C)
        • P(d);OGATEB::QAB(C)
        • P(g);::S(J),XP(g)
      • Refutation
        • S(a);
    • Try
      • S(F);P_PINS(b)
      • Threat
        • S(J)
      • Vars
        • P(c);OGATEB::QAB(C)
        • P(d);OGATEB::QAB(C)
        • P(g);::S(J),XP(g)
      • Refutation
        • S(a);
    • Try
      • S(F);P_PINS(b)
      • Threat
        • S(J)
      • Vars
        • P(c);OGATE,XS(F)::QAB(C),XP(c)
        • P(d);OGATEB::QAB(C)
        • P(g);::S(J),XP(g)
      • Refutation
        • P(c);
    • Try
      • S(F);P_PINS(b)
      • Threat
        • S(J)
      • Vars
        • P(d);OGATE,XS(F)::QAB(C),XP(d)
        • P(c);OGATEB::QAB(C)
        • P(g);::S(J),XP(g)
      • Refutation
        • P(d);
    • Try
      • S(F);P_PINS(b),XP(c)
      • Threat
        • S(F)
      • Vars
        • K(f);N_SPINS(b),OGATEB,S_FLIGHT,XS(F)::QAB1(C)
        • P(e);SBLOCK,XS(F)::S(J)
        • P(d);N_GUARD::QAR2(C),XS(b)
      • Refutation
        • P(g);
  • Actual
    • S(F);P_PINS(b),XP(d)
    • Threat
      • S(F)
    • Vars
      • K(f);N_SPINS(b),OGATEB,S_FLIGHT,XS(F)::QAB1(C)
      • P(g);SBLOCK,XS(F)::S(J)
      • P(c);N_GUARD::QAR2(C),XS(b)
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