MESON Chess Problem Database

Problem Display
PID: 79763 (8/6R1/7B/3p4/3P3p/4pN1p/4Pkpp/1K1Qn1rr w - - 0 1)

Touw Hian Bwee

2nd Prize, Die Schwalbe, 1972/II

8/6R1/7B/3p4/3P3p/4pN1p/4Pkpp/1K1Qn1rr

#2

7 + 10

6352 A Collection of Chess Problems by Touw Hian Bwee 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Kf1
      • 2.Qxe1#
  • Tries
    • 1.Se5?
      • 1...Kf1
        • 2.Rf7#
      • 1...Sc2
        • 2.Sd3#
      • 1...Sd3
        • 2.Sxd3#
      • 1...Sf3
        • 2.Sd3#
      • 1...Rf1!
    • 1.Bxe3+?
      • 1...Kf1
        • 2.Sd2#
        • 2.Qxe1#
      • 1...Kxe3!
    • 1.Bg5?
      • 1...Kf1
        • 2.Qxe1#
      • 1...Kg3
        • 2.Bxe3#
      • 1...Rf1
        • 2.Bxh4#
      • 1...Sc2
        • 2.Bxh4#
      • 1...Sd3
        • 2.Bxh4#
      • 1...Sxf3!
  • Keys
    • 1.Sg5!
      • 1...Kf1
        • 2.Rf7#
      • 1...Kg3
        • 2.Se4#
      • 1...Rf1
        • 2.Sxh3#
      • 1...Sc2
        • 2.Sxh3#
      • 1...Sd3
        • 2.Sxh3#
      • 1...Sf3
        • 2.Sxh3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • K(d);P-FLIGHT,P_SPINS(a)::QAR1(B),XS(a)
  • Tries
    • Try
      • S(D);
      • Vars
        • K(d);P-FLIGHT,P_SPINS(a)::R(G)
        • S(a);N_GUARD,P_PINQ(B)::S(D)
        • S(a);N_GUARD,P_PINQ(B)::S(D),XS(a)
      • Refutation
        • R(b);
    • Try
      • B(F);CHECK,XP(g)
      • Refutation
        • K(d);S_FLIGHT,XB(F)
    • Try
      • B(F);
      • Vars
        • K(d);P-FLIGHT,P_SPINS(a)::QAR1(B),XS(a)
        • K(d);S_FLIGHT::R(G)+B(F),XP(g)
        • R(b);SBLOCK::B(F),XP(i)
        • S(a);P_PINQ(B)::B(F),XP(i)
      • Refutation
        • S(a);P_PINQ(B),XS(D)
  • Actual
    • S(D);
    • Vars
      • K(d);P-FLIGHT,P_SPINS(a)::R(G)
      • K(d);S_FLIGHT::R(G)+S(D),DCHECK
      • R(b);SBLOCK::S(D),XP(h)
      • S(a);P_PINQ(B)::S(D),XP(h)
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