MESON Chess Problem Database
Problem Display
PID: 203632 (5B2/n2p2p1/1b4B1/1p2ppNK/1P1k4/NQ2pP2/2P1p3/4n3 w - - 0 1)
Kalina, Vasily Emanuilovich
64 Shakhmatnoe obozrenie, 1924
#2
9 + 11
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Ba5
- 2.Bc5#
- 1...Bc5
- 2.Bxc5#
- 1...Bc7
- 2.Bc5#
- 1...Bd8
- 2.Bc5#
- 1...Sxc2
- 2.Sxc2#
- 1...Sg2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 2.c3#
- 1...Sxf3
- 2.Qd3#
- 1...Sc6
- 2.Sxb5#
- 1...Sc8
- 2.Sxb5#
- 1...e4
- 2.Bxg7#
- 1...f4
- 2.c3#
- 1...d5
- 2.Se6#
- 2.Qb2#
- 1...d6
- 2.Se6#
- 1...Ba5
- Tries
- 1.Sh3?
- 1...Sxc2
- 2.Sxc2#
- 1...Sxf3
- 2.Qd3#
- 1...e4
- 2.Bxg7#
- 1...Ba5
- 2.Bc5#
- 1...Bc5
- 2.Bxc5#
- 1...Bc7
- 2.Bc5#
- 1...Bd8
- 2.Bc5#
- 1...Sg2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 2.c3#
- 1...Sc6
- 2.Sxb5#
- 1...Sc8
- 2.Sxb5#
- 1...f4
- 2.c3#
- 1...d5
- 2.Qb2#
- 1...d6!
- 1...Sxc2
- 1.Sf7?
- 1...Sxc2
- 2.Sxc2#
- 1...Sxf3
- 2.Qd3#
- 1...Ba5
- 2.Bc5#
- 1...Bc5
- 2.Bxc5#
- 1...Bc7
- 2.Bc5#
- 1...Bd8
- 2.Bc5#
- 1...Sg2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 2.c3#
- 1...Sc6
- 2.Sxb5#
- 1...Sc8
- 2.Sxb5#
- 1...e4
- 2.Bxg7#
- 1...f4
- 2.c3#
- 1...d5
- 2.Qb2#
- 1...d6!
- 1...Sxc2
- 1.Sh7?
- 1...Sxc2
- 2.Sxc2#
- 1...Sxf3
- 2.Qd3#
- 1...e4
- 2.Bxg7#
- 1...Ba5
- 2.Bc5#
- 1...Bc5
- 2.Bxc5#
- 1...Bc7
- 2.Bc5#
- 1...Bd8
- 2.Bc5#
- 1...Sg2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 2.c3#
- 1...Sc6
- 2.Sxb5#
- 1...Sc8
- 2.Sxb5#
- 1...f4
- 2.c3#
- 1...d5
- 2.Qb2#
- 1...d6!
- 1...Sxc2
- 1.Bxf5?
- threat
- 2.c3#
- 1...Sxc2
- 2.Sxc2#
- 2.Qd3#
- 1...e4
- 2.Bxg7#
- 1...g6+!
- threat
- 1.Bf7?
- threat
- 2.Qb2#
- 1...Sxc2
- 2.Sxc2#
- 1...Sd3
- 2.Qxd3#
- 2.c3#
- 1...g6+!
- threat
- 1.Bh7?
- 1...Sxc2
- 2.Sxc2#
- 1...Sxf3
- 2.Qd3#
- 1...e4
- 2.Bxg7#
- 1...d6
- 2.Se6#
- 1...Ba5
- 2.Bc5#
- 1...Bc5
- 2.Bxc5#
- 1...Bc7
- 2.Bc5#
- 1...Bd8
- 2.Bc5#
- 1...Sg2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 2.c3#
- 1...Sc6
- 2.Sxb5#
- 1...Sc8
- 2.Sxb5#
- 1...f4
- 2.c3#
- 1...d5
- 2.Se6#
- 2.Qb2#
- 1...g6+!
- 1...Sxc2
- 1.Bd6?
- 1...Sxc2
- 2.Sxc2#
- 1...Sxf3
- 2.Qd3#
- 1...Ba5
- 2.Bc5#
- 1...Bc5
- 2.Bxc5#
- 1...Bc7
- 2.Bc5#
- 1...Bd8
- 2.Bc5#
- 1...Sg2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 2.c3#
- 1...Sc6
- 2.Sxb5#
- 1...Sc8
- 2.Sxb5#
- 1...f4
- 2.c3#
- 1...e4!
- 1...Sxc2
- 1.Be7?
- 1...Sxc2
- 2.Sxc2#
- 1...Sxf3
- 2.Qd3#
- 1...d6
- 2.Se6#
- 1...Ba5
- 2.Bc5#
- 1...Bc5
- 2.Bxc5#
- 1...Bc7
- 2.Bc5#
- 1...Bd8
- 2.Bc5#
- 1...Sg2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 2.c3#
- 1...Sc6
- 2.Sxb5#
- 1...Sc8
- 2.Sxb5#
- 1...f4
- 2.c3#
- 1...d5
- 2.Se6#
- 2.Qb2#
- 1...e4!
- 1...Sxc2
- 1.Qc3+?
- 1...Kd5
- 2.Bf7#
- 1...Kxc3!
- 1...Kd5
- 1.f4?
- 1...Sxc2
- 2.Sxc2#
- 1...exf4
- 2.Bxg7#
- 1...Ba5
- 2.Bc5#
- 1...Bc5
- 2.Bxc5#
- 1...Bc7
- 2.Bc5#
- 1...Bd8
- 2.Bc5#
- 1...Sg2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 2.c3#
- 1...Sf3
- 2.Qd3#
- 1...Sc6
- 2.Sxb5#
- 1...Sc8
- 2.Sxb5#
- 1...e4
- 2.Bxg7#
- 1...d5
- 2.Qb2#
- 1...d6!
- 1...Sxc2
- 1.Sh3?
- Keys
- 1.c4!
- 1...Sxf3
- 2.Sc2#
- 1...bxc4
- 2.Qxc4#
- 1...e4
- 2.Bxg7#
- 1...d6
- 2.Se6#
- 1...Ba5
- 2.Bc5#
- 1...Bc5
- 2.Bxc5#
- 1...Bc7
- 2.Bc5#
- 1...Bd8
- 2.Bc5#
- 1...Sc2
- 2.Sxc2#
- 1...Sg2
- 2.Sc2#
- 1...Sd3
- 2.Sc2#
- 1...Sc6
- 2.Sxb5#
- 1...Sc8
- 2.Sxb5#
- 1...f4
- 2.Qb2#
- 1...d5
- 2.Se6#
- 1...Sxf3
- 1.c4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 3
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- B(h);N_GUARD::B(I)
- B(h);N_GUARD::B(I),XB(h)
- S(a);XP(A)::S(B),XS(a)
- S(a);N_GUARD::QAR1(C)
- S(a);N_GUARD,XP(D)::QAR1(C)
- S(i);N_GUARD::S(B),XP(e)
- P(f);OGATEB::B(I),XP(k)
- P(g);::P(A)
- P(j);N_GUARD::S(F)
- Tries
- Try
- S(F);
- Vars
- S(a);XP(A)::S(B),XS(a)
- S(a);N_GUARD,XP(D)::QAR1(C)
- P(f);OGATEB::B(I),XP(k)
- B(h);N_GUARD::B(I)
- B(h);N_GUARD::B(I),XB(h)
- S(a);N_GUARD::QAR1(C)
- S(i);N_GUARD::S(B),XP(e)
- P(g);::P(A)
- P(j);SBLOCK::QAB(C)
- Refutation
- P(j);
- Try
- S(F);
- Vars
- S(a);XP(A)::S(B),XS(a)
- S(a);N_GUARD,XP(D)::QAR1(C)
- B(h);N_GUARD::B(I)
- B(h);N_GUARD::B(I),XB(h)
- S(a);N_GUARD::QAR1(C)
- S(i);N_GUARD::S(B),XP(e)
- P(f);OGATEB::B(I),XP(k)
- P(g);::P(A)
- P(j);SBLOCK::QAB(C)
- Refutation
- P(j);
- Try
- S(F);
- Vars
- S(a);XP(A)::S(B),XS(a)
- S(a);N_GUARD,XP(D)::QAR1(C)
- P(f);OGATEB::B(I),XP(k)
- B(h);N_GUARD::B(I)
- B(h);N_GUARD::B(I),XB(h)
- S(a);N_GUARD::QAR1(C)
- S(i);N_GUARD::S(B),XP(e)
- P(g);::P(A)
- P(j);SBLOCK::QAB(C)
- Refutation
- P(j);
- Try
- B(H);XP(g)
- Threat
- P(A)
- Vars
- P(f);OGATEB::B(I),XP(k)
- Refutation
- P(k);CHECK
- Try
- B(H);
- Threat
- QAB(C)
- Vars
- S(a);XP(A)::S(B),XS(a)
- Refutation
- P(k);CHECK
- Try
- B(H);
- Vars
- S(a);XP(A)::S(B),XS(a)
- S(a);N_GUARD,XP(D)::QAR1(C)
- P(f);OGATEB::B(I),XP(k)
- P(j);N_GUARD::S(F)
- B(h);N_GUARD::B(I)
- B(h);N_GUARD::B(I),XB(h)
- S(a);N_GUARD::QAR1(C)
- S(i);N_GUARD::S(B),XP(e)
- P(g);::P(A)
- Refutation
- P(k);CHECK
- Try
- B(I);
- Vars
- S(a);XP(A)::S(B),XS(a)
- S(a);N_GUARD,XP(D)::QAR1(C)
- B(h);N_GUARD::B(I)
- B(h);N_GUARD::B(I),XB(h)
- S(a);N_GUARD::QAR1(C)
- S(i);N_GUARD::S(B),XP(e)
- P(g);::P(A)
- Refutation
- P(f);
- Try
- B(I);
- Vars
- S(a);XP(A)::S(B),XS(a)
- S(a);N_GUARD,XP(D)::QAR1(C)
- P(j);N_GUARD::S(F)
- B(h);N_GUARD::B(I)
- B(h);N_GUARD::B(I),XB(h)
- S(a);N_GUARD::QAR1(C)
- S(i);N_GUARD::S(B),XP(e)
- P(g);::P(A)
- Refutation
- P(f);
- Try
- Q(C);CHECK
- Vars
- K(d);P-FLIGHT::B(H)
- Refutation
- K(d);S_FLIGHT,XQ(C)
- Try
- P(D);
- Vars
- S(a);XP(A)::S(B),XS(a)
- P(f);OGATEB,XP(D)::B(I),XP(k)
- B(h);N_GUARD::B(I)
- B(h);N_GUARD::B(I),XB(h)
- S(a);N_GUARD::QAR1(C)
- S(i);N_GUARD::S(B),XP(e)
- P(f);OGATEB::B(I),XP(k)
- P(j);SBLOCK::QAB(C)
- Refutation
- P(j);
- Try
- Actual
- P(A);
- Vars
- S(a);N_GUARD,XP(D)::S(B)
- P(e);OGATE,XP(A)::QAR1(C),XP(e)
- P(f);OGATEB::B(I),XP(k)
- P(j);N_GUARD::S(F)
- B(h);N_GUARD::B(I)
- B(h);N_GUARD::B(I),XB(h)
- S(a);N_GUARD::S(B),XS(a)
- S(a);N_GUARD::S(B)
- S(i);N_GUARD::S(B),XP(e)
- P(g);::QAB(C)
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).