MESON Chess Problem Database
Problem Display
PID: 60100 (1n4nB/1Qr1bb2/p4r2/6R1/2k2qBR/PN1p4/K1P2p2/3N4 w - - 0 1)
Kovacs, M
5th Prize, Osterreichische Arbeiter Schachbund, 1928
#2
10 + 11
SOLUTION
- SOUND
- Sets
- 1...Qc1
- 2.Be6#
- 2.Qe4#
- 1...Qd2
- 2.Be6#
- 2.Qe4#
- 1...Qh2
- 2.Be6#
- 2.Qe4#
- 1...Qe3
- 2.Be6#
- 1...Qg3
- 2.Be6#
- 2.Qe4#
- 1...Qe5
- 2.Be6#
- 1...Qxg5
- 2.Be6#
- 1...Qd6
- 2.Be6#
- 1...Qf3
- 2.Be6#
- 1...Qd4
- 2.Sd2#
- 2.Sa5#
- 1...Qe4
- 2.Qxe4#
- 1...Qf5
- 2.Bxf5#
- 1...Rf5
- 2.Sb2#
- 1...Rb6
- 2.Sb2#
- 2.Sa5#
- 1...Rfc6
- 2.Sb2#
- 2.Sa5#
- 1...Rd6
- 2.Sb2#
- 2.Sa5#
- 2.Qb4#
- 1...Re6
- 2.Sb2#
- 2.Sa5#
- 2.Qd5#
- 1...Rg6
- 2.Sb2#
- 2.Sa5#
- 1...Rh6
- 2.Sb2#
- 2.Sa5#
- 1...Rc5
- 2.Qb4#
- 1...Bb4
- 2.Qxb4#
- 1...Bd8
- 2.Qb4#
- 1...Bd5
- 2.Qxd5#
- 1...Bh5
- 2.Qd5#
- 1...Bg6
- 2.Qd5#
- 1...Be8
- 2.Qd5#
- 1...Sc6
- 2.Qxa6#
- 1...dxc2
- 2.Be2#
- 1...d2
- 2.Be2#
- 1...a5
- 2.Qb5#
- 1...Qc1
- Tries
- 1.Sd2+?
- 1...Qxd2
- 2.Be6#
- 2.Qe4#
- 1...Kd4+!
- 1...Qxd2
- 1.Be6+?
- 1...Rxe6
- 2.Sb2#
- 2.Sd2#
- 2.Sa5#
- 2.Qd5#
- 1...Bxe6!
- 1...Rxe6
- 1.Bxf6?
- threat
- 2.Sb2#
- 2.Sa5#
- 1...Qxg5
- 2.Sb2#
- 2.Be6#
- 1...Qxf6
- 2.Be6#
- 1...Bxa3
- 2.Sa5#
- 1...Bxf6
- 2.Qb4#
- 1...dxc2
- 2.Sb2#
- 2.Be2#
- 1...Qc1
- 2.Sa5#
- 2.Be6#
- 2.Qe4#
- 1...Qd2
- 2.Sb2#
- 2.Sxd2#
- 2.Be6#
- 2.Qe4#
- 1...Qe5
- 2.Be6#
- 1...Qd4
- 2.Sd2#
- 2.Sa5#
- 1...Qf5
- 2.Sb2#
- 2.Se3#
- 2.Bxf5#
- 1...Rc5
- 2.Sb2#
- 2.Qb4#
- 1...Bb4
- 2.Sb2#
- 2.Qxb4#
- 1...Bd5
- 2.Sb2#
- 2.Qxd5#
- 1...Sc6
- 2.Sb2#
- 2.Qxa6#
- 1...a5
- 2.Sb2#
- 2.Sxa5#
- 2.Qb5#
- 1...Sxf6!
- threat
- 1.Qxa6+?
- 1...Rxa6
- 2.Sb2#
- 1...Sxa6!
- 1...Rxa6
- 1.Qxc7+?
- 1...Qxc7
- 2.Be6#
- 1...Rc6
- 2.Sb2#
- 2.Sa5#
- 2.Qxf4#
- 1...Bc5
- 2.Rxc5#
- 2.Qxc5#
- 1...Sc6!
- 1...Qxc7
- 1.Sd2+?
- Keys
- 1.c3!
- threat
- 2.Sa5#
- 1...Qd2+
- 2.Sxd2#
- 1...Qxg5
- 2.Be6#
- 1...d2
- 2.Be2#
- 1...Qe5
- 2.Be6#
- 1...Qf5
- 2.Bxf5#
- 1...Rf5
- 2.Sb2#
- 1...Rc5
- 2.Qb4#
- 1...Bb4
- 2.Qxb4#
- 1...Bd5
- 2.Qxd5#
- 1...Sc6
- 2.Qxa6#
- 1...a5
- 2.Sxa5#
- 2.Qb5#
- threat
- 1.c3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 10
- Sets
- Q(d);::R(G)+B(F),DCHECK
- Q(d);XR(H)::R(G)+B(F),DCHECK
- Q(d);N_GUARD::QAR2(I),XQ(d)
- Q(d);OGATEB::R(G)+B(F),XQ(d)
- R(f);::S(A)
- R(g);S_CUTB(h)::QAR1(I)
- B(h);N_GUARD::QAR1(I),XB(h)
- B(h);N_GUARD::QAR1(I)
- B(i);N_GUARD::QAB1(I),XB(i)
- B(i);N_GUARD::QAB1(I)
- S(j);N_GUARD,S_CUTR(f)::QAB(I),XP(e)
- P(b);OGATEB,XP(C)::B(F)
- P(b);OGATEB::B(F)
- P(e);N_GUARD::QAB1(I)
- Tries
- Try
- S(E);CHECK
- Refutation
- K(c);CHECK,P-FLIGHT,P_SPINR(f)
- Try
- B(F);CHECK,P_PINQ(d)
- Refutation
- B(i);XB(F)
- Try
- B(J);XR(f)
- Threat
- DUALS(2)
- Vars
- Q(d);XB(J)::R(G)+B(F),DCHECK
- B(h);XP(D)::S(E)
- B(h);N_GUARD,XB(J)::QAR1(I)
- Q(d);::R(G)+B(F),DCHECK
- Refutation
- S(k);XB(J)
- Try
- Q(I);CHECK,XP(e)
- Vars
- R(f);P_PINP(D),XQ(I)::S(A)
- Refutation
- S(j);XQ(I)
- Try
- Q(I);CHECK,XR(g)
- Vars
- Q(d);XQ(I)::R(G)+B(F),DCHECK
- Refutation
- S(j);P_SPINS(j)
- Try
- Actual
- P(C);
- Threat
- S(E)
- Vars
- Q(d);CHECK,N_GUARD::S(E),XQ(d)
- Q(d);XR(H)::R(G)+B(F),DCHECK
- P(b);OGATEB::B(F)
- Q(d);::R(G)+B(F),DCHECK
- Q(d);OGATEB::R(G)+B(F),XQ(d)
- R(f);::S(A)
- R(g);S_CUTB(h)::QAR1(I)
- B(h);N_GUARD::QAR1(I),XB(h)
- B(i);N_GUARD::QAB1(I),XB(i)
- S(j);N_GUARD,S_CUTR(f)::QAB(I),XP(e)
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).