MESON Chess Problem Database

Problem Display
PID: 80265 (2b1R3/2Npn3/5r2/R7/3NkpP1/1p4pP/1K1Q2r1/7B w - - 0 1)

Touw Hian Bwee

3rd Comm., L'Italia Scacchistica, 1968

2b1R3/2Npn3/5r2/R7/3NkpP1/1p4pP/1K1Q2r1/7B

#2

9 + 9

6352 A Collection of Chess Problems by Touw Hian Bwee 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Rf8
      • 2.Rxe7#
  • Tries
    • 1.Sc2?
      • threat
        • 2.Qe2#
        • 2.Qd5#
      • 1...Kf3
        • 2.Bxg2#
        • 2.Qxg2#
      • 1...d5
        • 2.Qe2#
        • 2.Qxd5#
      • 1...Rf5
        • 2.Qe2#
      • 1...Rd6
        • 2.Qe2#
      • 1...Re6
        • 2.Qe2#
      • 1...Ba6
        • 2.Qd5#
      • 1...Bb7
        • 2.Qe2#
      • 1...f3
        • 2.Qe3#
        • 2.Qd4#
      • 1...bxc2!
    • 1.Ra4?
      • threat
        • 2.Qe2#
      • 1...Ke5
        • 2.Sf3#
      • 1...f3
        • 2.Sc6#
      • 1...Ba6!
  • Keys
    • 1.Sdb5!
      • threat
        • 2.Qe2#
      • 1...Kf3
        • 2.Bxg2#
      • 1...Ke5
        • 2.Sd6#
      • 1...f3
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(f);N_GUARD::R(I),XS(h)
  • Tries
    • Try
      • S(E);N_SPINQ(C)
      • Threat
        • DUALS(2)
      • Vars
        • R(f);::QAR2(C)
        • R(f);N_SPINS(h)::QAR2(C)
        • B(i);::QAB1(C)
        • B(i);::QAR2(C)
      • Refutation
        • P(b);XS(E)
    • Try
      • R(G);
      • Threat
        • QAR2(C)
      • Vars
        • K(d);N_SPINR(a),P-FLIGHT::S(E)
        • P(e);N_SPINR(a),SBLOCK::R(G)+S(E)
      • Refutation
        • B(i);
  • Actual
    • S(E);
    • Threat
      • QAR2(C)
    • Vars
      • K(d);N_SPINS(h),S_FLIGHT::B(A),XR(a)
      • K(d);N_SPINR(a),P-FLIGHT::R(G)+S(E)
      • P(e);N_SPINR(a),SBLOCK::S(E)
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