MESON Chess Problem Database

Problem Display
PID: 35058 (3rq2B/p2QPp1B/K4Rr1/N2n2p1/8/3k1Pn1/R3NP2/8 w - - 0 1)

Rice, John Michael

3rd HM., The Problemist, 1982

3rq2B/p2QPp1B/K4Rr1/N2n2p1/8/3k1Pn1/R3NP2/8

#2

11 + 9

3752 FIDE Album (1980-1982) 1988
3674 As in all Arts 1996
5174 Chess Problem Spectrum 2003
136 Problem Observer 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe7
      • 2.Qb5#
    • 1...Qf8
      • 2.Qb5#
    • 1...Qg8
      • 2.Qb5#
    • 1...Qxh8
      • 2.Qb5#
    • 1...Ra8
      • 2.Qxd5#
    • 1...Rb8
      • 2.Qxd5#
    • 1...Rc8
      • 2.Qxd5#
    • 1...Sf1
      • 2.Qf5#
    • 1...Sh1
      • 2.Qf5#
    • 1...Sf5
      • 2.Qxf5#
    • 1...Sh5
      • 2.Qf5#
  • Tries
    • 1.Bxg6+?
      • 1...Se4
        • 2.Bxe4#
      • 1...Sf5
        • 2.Bxf5#
        • 2.Qxf5#
      • 1...fxg6!
    • 1.Rc6?
      • threat
        • 2.Sc1#
      • 1...Sxe2
        • 2.Qf5#
      • 1...f6
        • 2.Rc3#
      • 1...Qxh8!
    • 1.Rd6?
      • threat
        • 2.Sc1#
      • 1...Qxh8
        • 2.Qb5#
      • 1...Sxe2
        • 2.Qf5#
      • 1...f6
        • 2.Rxd5#
      • 1...Rc8!
    • 1.Re6?
      • threat
        • 2.Sc1#
      • 1...Qxh8
        • 2.Qb5#
      • 1...Rc8
        • 2.Qxd5#
      • 1...f6
        • 2.Re3#
      • 1...Sxe2!
    • 1.Rxg6?
      • threat
        • 2.Sc1#
      • 1...Qxh8
        • 2.Qb5#
      • 1...Sxe2
        • 2.Qf5#
      • 1...Rc8
        • 2.Qxd5#
      • 1...f6!
    • 1.Qf5+?
      • 1...Se4
        • 2.Qxe4#
      • 1...Sxf5!
  • Keys
    • 1.Rb6!
      • threat
        • 2.Sc1#
      • 1...Qxh8
        • 2.Qb5#
      • 1...Sxe2
        • 2.Qf5#
      • 1...Rc8
        • 2.Qxd5#
      • 1...f6
        • 2.Rb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 9
  • Sets
    • Q(i);N_GUARD,XP(I)::QAB(H)
    • Q(i);N_GUARD::QAB(H)
    • Q(i);N_GUARD,XB(K)::QAB(H)
    • R(h);N_GUARD::QAR2(H),XS(c)
    • S(b);N_GUARD::QAB(H)
    • S(b);N_GUARD,N_SPINR(e)::QAB(H),XS(b)
  • Tries
    • Try
      • B(J);CHECK,N_SPINR(G),XR(e)
      • Vars
        • S(b);N_GUARD,N_SPINS(c),P_SPINS(b)::B(J),XS(b)
      • Refutation
        • P(g);XB(J)
    • Try
      • R(G);
      • Threat
        • S(B)
      • Vars
        • S(b);N_GUARD,XS(B)::QAB(H)
        • P(g);N_PINR(G)::R1(G)
      • Refutation
        • Q(i);XB(K)
    • Try
      • R(G);
      • Threat
        • S(B)
      • Vars
        • Q(i);N_GUARD,XB(K)::QAB(H)
        • S(b);N_GUARD,XS(B)::QAB(H)
        • P(g);N_PINR(G)::R(G),XS(c)
      • Refutation
        • R(h);
    • Try
      • R(G);
      • Threat
        • S(B)
      • Vars
        • Q(i);N_GUARD,XB(K)::QAB(H)
        • R(h);N_GUARD::QAR2(H),XS(c)
        • P(g);N_PINR(G)::R1(G)
      • Refutation
        • S(b);XS(B)
    • Try
      • R(G);N_SPINR(G),XR(e)
      • Threat
        • S(B)
      • Vars
        • Q(i);N_GUARD,XB(K)::QAB(H)
        • S(b);N_GUARD,XS(B)::QAB(H)
        • R(h);N_GUARD::QAR2(H),XS(c)
      • Refutation
        • P(g);
    • Try
      • Q(H);CHECK,N_PINR(e),N_PINS(c)
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAB1(H),XS(b)
      • Refutation
        • S(b);XQ(H)
  • Actual
    • R(G);
    • Threat
      • S(B)
    • Vars
      • Q(i);N_GUARD,XB(K)::QAB(H)
      • S(b);N_GUARD,XS(B)::QAB(H)
      • R(h);N_GUARD::QAR2(H),XS(c)
      • P(g);N_PINR(G)::R(G)
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