MESON Chess Problem Database
Problem Display
PID: 240559 (1NN4K/4n3/P5bR/2k1p3/2P5/PPB5/2Qnr3/3R1B2 w - - 0 1)
Bakcsi, Gyorgy
Die Schwalbe, 1971
#2
12 + 6
SOLUTION
- SOUND
- Sets
- 1...Re1
- 2.b4#
- 1...Rf2
- 2.b4#
- 1...Rg2
- 2.b4#
- 1...Rh2
- 2.b4#
- 1...Re3
- 2.b4#
- 1...Re4
- 2.b4#
- 1...Bxc2
- 2.Sd7#
- 1...Bd3
- 2.Sd7#
- 1...Be4
- 2.Sd7#
- 1...Bh5
- 2.Sd7#
- 1...Bf7
- 2.Sd7#
- 1...Bh7
- 2.Sd7#
- 1...Sb1
- 2.Bb4#
- 1...Sxf1
- 2.Bb4#
- 1...Sxb3
- 2.Bb4#
- 1...Sf3
- 2.Bb4#
- 1...Se4
- 2.Bb4#
- 1...Sc6
- 2.Sd7#
- 1...Re1
- Tries
- 1.Bd4+?
- 1...exd4
- 2.b4#
- 1...Kxd4!
- 1...exd4
- 1.Rxd2?
- threat
- 2.Bb4#
- 1...Rxd2
- 2.b4#
- 1...Bd3
- 2.Sd7#
- 1...Sd5
- 2.Rxd5#
- 1...Sc6
- 2.Sd7#
- 2.Rd5#
- 1...Sxc8!
- threat
- 1.Qd3?
- threat
- 2.Bb4#
- 2.Qd6#
- 2.b4#
- 1...Bxd3
- 2.Sd7#
- 1...Sxb3
- 2.Bb4#
- 1...Sxc4
- 2.Qxc4#
- 1...Se4
- 2.Bb4#
- 2.b4#
- 1...Sd5
- 2.Qxd5#
- 1...Sf5
- 2.Bb4#
- 2.Qd5#
- 2.b4#
- 1...Sc6
- 2.Sd7#
- 2.Qd5#
- 2.Qd6#
- 1...Sxc8!
- threat
- 1.Qxd2?
- threat
- 2.Bb4#
- 2.Qd6#
- 1...Rxd2
- 2.b4#
- 1...Bd3
- 2.Sd7#
- 1...Sd5
- 2.Qxd5#
- 1...Sf5
- 2.Bb4#
- 2.Qd5#
- 1...Sc6
- 2.Sd7#
- 2.Qd5#
- 2.Qd6#
- 1...Sxc8!
- threat
- 1.Bd4+?
- Keys
- 1.Qe4!
- threat
- 2.Sd7#
- 2.Bb4#
- 2.b4#
- 1...Rxe4
- 2.b4#
- 1...Bxe4
- 2.Sd7#
- 1...Sxb3
- 2.Sd7#
- 2.Bb4#
- 1...Sxc4
- 2.Qxc4#
- 1...Sxe4
- 2.Bb4#
- 1...Sxc8
- 2.Qc6#
- 1...Bf5
- 2.Bb4#
- 2.b4#
- 1...Be8
- 2.Bb4#
- 2.b4#
- 1...Sd5
- 2.Qxd5#
- 1...Sc6
- 2.Sd7#
- 2.Qd5#
- 2.Qxc6#
- threat
- 1.Qe4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 15
- Sets
- R(b);::P(E)
- R(b);P_PINR(I)::P(E)
- B(e);XQ(C)::S(J)
- B(e);::S(J)
- S(a);::B(F)
- S(a);XB(B)::B(F)
- S(a);XP(E)::B(F)
- S(f);SBLOCK::S(J)
- Tries
- Try
- B(F);CHECK
- Vars
- P(d);SBLOCK,XB(F)::P(E)
- Refutation
- K(c);P_SPINS(a),S_FLIGHT,XB(F)
- Try
- R(A);XS(a)
- Threat
- B(F)
- Vars
- R(b);XR(A)::P(E)
- B(e);::S(J)
- S(f);N_GUARD::R1(A),XS(f)
- Refutation
- S(f);XS(K)
- Try
- Q(C);
- Threat
- DUALS(3)
- Vars
- B(e);XQ(C)::S(J)
- S(a);XP(E)::B(F)
- S(a);OGATE,XP(G)::QAR1(C),XS(a)
- S(f);N_GUARD::QAR1(C),XS(f)
- Refutation
- S(f);XS(K)
- Try
- Q(C);XS(a)
- Threat
- DUALS(2)
- Vars
- R(b);XQ(C)::P(E)
- B(e);::S(J)
- S(f);N_GUARD::QAR1(C),XS(f)
- Refutation
- S(f);XS(K)
- Try
- Actual
- Q(C);
- Threat
- DUALS(3)
- Vars
- R(b);XQ(C)::P(E)
- B(e);XQ(C)::S(J)
- S(a);OGATE,XP(G)::QAR1(C),XS(a)
- S(a);XQ(C)::B(F)
- S(f);N_GUARD,XS(K)::QAR1(C)
- S(f);N_GUARD::QAR1(C),XS(f)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).