MESON Chess Problem Database

Problem Display
PID: 10755 (8/b2qBn2/5Q2/3k2N1/r7/p7/K2P2Nr/2RR1B2 w - - 0 1)

Rice, John Michael

2nd HM., The Problemist, 1967

8/b2qBn2/5Q2/3k2N1/r7/p7/K2P2Nr/2RR1B2

#2

9 + 7

5862 An ABC of Chess Problems 1970
5174 Chess Problem Spectrum 2003
5454 Near Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Bxc4#
    • 1...Rd4
      • 2.Se3#
    • 1...Rf4
      • 2.Sxf4#
    • 1...Ra5
      • 2.Sf4#
      • 2.Bc4#
    • 1...Ra6
      • 2.Sf4#
      • 2.Bc4#
    • 1...Be3
      • 2.Sxe3#
    • 1...Bd4
      • 2.Sf4#
    • 1...Bc5
      • 2.Rxc5#
    • 1...Bb8
      • 2.Se3#
      • 2.Rc5#
  • Tries
    • 1.Qf3+?
      • 1...Kd4
        • 2.Qe4#
      • 1...Re4
        • 2.Qxe4#
      • 1...Ke5!
    • 1.Qe6+?
      • 1...Kd4
        • 2.Sf3#
        • 2.Qe4#
      • 1...Qxe6!
  • Keys
    • 1.d4!
      • threat
        • 2.Qf3#
      • 1...Rxg2+
        • 2.Bxg2#
      • 1...Qxe7
        • 2.Qc6#
      • 1...Rxd4
        • 2.Bc4#
      • 1...Bxd4
        • 2.Rc5#
      • 1...Sxg5
        • 2.Qe5#
      • 1...Qh3
        • 2.Qc6#
      • 1...Qg4
        • 2.Qc6#
      • 1...Qf5
        • 2.Qc6#
      • 1...Qe6
        • 2.Qxe6#
      • 1...Rh3
        • 2.Sf4#
      • 1...Rh4
        • 2.Se3#
      • 1...Se5
        • 2.Qxe5#
      • 1...Sd6
        • 2.Qe5#

This anticipates 64438(1982)

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 11
    • REMOVED MATES = 4
  • Sets
    • R(c);N_GUARD::B(C),XR(c)
    • R(c);S_CUTB(e)::S(F)
    • R(c);N_GUARD::S(F),XR(c)
    • B(e);N_GUARD::S(F),XB(e)
    • B(e);S_CUTR(c)::S(F)
    • B(e);N_GUARD::R1(A),XB(e)
  • Tries
    • Try
      • Q(H);CHECK
      • Vars
        • K(d);P-FLIGHT::QAR1(H)
        • R(c);N_GUARD,P_SPINR(c)::QAB1(H),XR(c)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • Q(H);CHECK
      • Refutation
        • Q(f);XQ(H)
  • Actual
    • P(E);P_SPINS(F)
    • Threat
      • QAB(H)
    • Vars
      • R(a);CHECK,OGATE,XS(F)::B(C),XR(a)
      • Q(f);N_GUARD,XB(I)::QAB1(H)
      • R(c);N_GUARD,P_SPINR(c),XP(E)::B(C)
      • B(e);N_GUARD,P_SPINB(e),XP(E)::R1(A)
      • S(g);N_GUARD,XS(G)::QAR1(H)
      • Q(f);N_GUARD::QAB1(H)
      • Q(f);N_GUARD::QAB1(H),XQ(f)
      • R(a);N_PINS(F)::S(F)
      • S(g);N_GUARD::QAR1(H),XS(g)
      • S(g);N_GUARD::QAR1(H)
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