MESON Chess Problem Database

Problem Display
PID: 124347 (B4R1K/4N3/1pr4p/q2n4/1p2k1P1/pQ3N2/2r1Pn1B/8 w - - 0 1)

Liew, Chee Meng

Chess Life & Review, 1988

B4R1K/4N3/1pr4p/q2n4/1p2k1P1/pQ3N2/2r1Pn1B/8

#2

9 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Rf4#
    • 1...Rc5
      • 2.Rf4#
    • 1...Rd6
      • 2.Rf4#
    • 1...Re6
      • 2.Rf4#
    • 1...Rg6
      • 2.Rf4#
    • 1...Rc7
      • 2.Rf4#
    • 1...Sd1
      • 2.Qd3#
    • 1...Sh1
      • 2.Qd3#
    • 1...Sd3
      • 2.Qxd3#
    • 1...Sh3
      • 2.Qd3#
    • 1...Sxg4
      • 2.Qd3#
    • 1...Se3
      • 2.Rf4#
    • 1...Sf4
      • 2.Rxf4#
    • 1...Sc7
      • 2.Rf4#
    • 1...Sxe7
      • 2.Rf4#
  • Tries
    • 1.Sxd5?
      • threat
        • 2.Sf6#
        • 2.Rf4#
      • 1...Qxd5
        • 2.Rf4#
      • 1...Sxg4
        • 2.Rf4#
        • 2.Qd3#
      • 1...R2c4
        • 2.Sf6#
      • 1...R2c3
        • 2.Rf4#
      • 1...R6c3
        • 2.Rf4#
        • 2.Re8#
      • 1...Rf6
        • 2.Sxf6#
        • 2.Qe3#
      • 1...Rc8
        • 2.Sf6#
        • 2.Qe3#
      • 1...Sd3
        • 2.Qxd3#
        • 2.exd3#
      • 1...Sh3
        • 2.Sf6#
        • 2.Qd3#
      • 1...Qxa8!
    • 1.Qxc2+?
      • 1...Ke3
        • 2.Sf5#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Rxc2!
    • 1.Qe3+?
      • 1...Sxe3
        • 2.Rf4#
      • 1...Kxe3!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Sg3#
      • 1...R2c3
        • 2.Sd2#
      • 1...R6c3
        • 2.Re8#
      • 1...Rf6
        • 2.Qe3#
      • 1...Sh1
        • 2.Qd3#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sc3
        • 2.Qc4#
      • 1...Sf6
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 13
  • Sets
    • R(i);P_SPINS(g)::R1(H)
    • S(b);N_GUARD::QAB1(C)
    • S(b);N_GUARD::QAB1(C),XS(b)
    • S(b);N_GUARD,XP(E)::QAB1(C)
    • S(g);N_GUARD,P_SPINR(i)::R1(H)
    • S(g);N_GUARD,P_SPINR(i)::R1(H),XS(g)
    • S(g);N_GUARD,P_SPINR(i),XS(F)::R1(H)
  • Tries
    • Try
      • S(F);XS(g)
      • Threat
        • DUALS(2)
      • Vars
        • Q(f);XS(F)::R1(H)
        • R(a);::S(F)
        • R(a);::R1(H)
      • Refutation
        • Q(f);P_PINR(H),XB(G)
    • Try
      • Q(C);CHECK,XR(a)
      • Vars
        • K(e);P-FLIGHT::S(F)
        • S(b);N_GUARD,P_SPINS(b)::QAB1(C),XS(b)
      • Refutation
        • R(i);P_SPINS(g),XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • S(g);P_SPINR(i),SBLOCK,XQ(C)::R1(H)
      • Refutation
        • K(e);P-FLIGHT,XQ(C)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • R(a);N_GUARD::S(D)
      • R(i);N_GUARD,P_SPINS(g)::R(H)
      • R(i);P_SPINS(g)::QAR1(C)
      • S(b);N_GUARD::QAB1(C)
      • S(b);N_GUARD::QAB1(C),XS(b)
      • S(g);P_SPINR(i),S_CUTR(a)::QAR2(C)
      • S(g);P_SPINR(i)::S(F)
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