MESON Chess Problem Database
Problem Display
PID: 47846 (4N1KB/2b5/5Pn1/pRPBkP2/1P2P3/qpP3Pb/1Q2R3/8 w - - 0 1)
Stepochkin, Anatoly Viktorovich
1st Prize, Pilchenko-50 JT (Uralski Problemist), 2002
#2
14 + 7
| 4393 | Uralski Problemist | 2003 |
| 145 | StrateGems | 2004 |
| 15174 | FIDE Album (2001-2003) | 2011 |
| 56 | The Problemist | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Qxb4
- 2.cxb4#
- 1...Qa4
- 2.c4#
- 1...Sf4
- 2.f7#
- 1...Sh4
- 2.f7#
- 1...Se7+
- 2.fxe7#
- 1...Sf8
- 2.f7#
- 1...Qxb4
- Tries
- 1.Bxb3?
- threat
- 2.c6#
- 1...Se7+
- 2.fxe7#
- 1...Qxb4
- 2.cxb4#
- 1...Qa4
- 2.c4#
- 1...Bb6
- 2.cxb6#
- 1...Bd6
- 2.cxd6#
- 1...Sf4
- 2.f7#
- 1...Qxb3+!
- threat
- 1.Bc4?
- threat
- 2.c6#
- 1...Se7+
- 2.fxe7#
- 1...Qxb4
- 2.cxb4#
- 1...Bb6
- 2.cxb6#
- 1...Bd6
- 2.cxd6#
- 1...Sf4
- 2.f7#
- 1...Qa4!
- threat
- 1.Bb7?
- threat
- 2.c6#
- 1...Se7+
- 2.fxe7#
- 1...Qxb4
- 2.cxb4#
- 1...Qa4
- 2.c4#
- 1...Bb6
- 2.cxb6#
- 1...Bd6
- 2.cxd6#
- 1...Sf4
- 2.f7#
- 1...Bxf5!
- threat
- 1.Bf7?
- threat
- 2.c6#
- 1...Se7+
- 2.fxe7#
- 1...Qxb4
- 2.cxb4#
- 1...Qa4
- 2.c4#
- 1...Bb6
- 2.cxb6#
- 1...Bd6
- 2.cxd6#
- 1...Sf4!
- threat
- 1.Ba8?
- threat
- 2.c6#
- 1...Se7+
- 2.fxe7#
- 1...Qxb4
- 2.cxb4#
- 1...Qa4
- 2.c4#
- 1...Bb6
- 2.cxb6#
- 1...Bd6
- 2.cxd6#
- 1...Sf4
- 2.f7#
- 1...Bxf5!
- threat
- 1.Bg7?
- threat
- 2.f7#
- 1...Se7+
- 2.fxe7#
- 1...Bd8!
- threat
- 1.Qd2?
- threat
- 2.Qd4#
- 1...Se7+
- 2.fxe7#
- 1...Qxb4!
- threat
- 1.Bxb3?
- Keys
- 1.Be6!
- threat
- 2.c6#
- 1...Se7+
- 2.fxe7#
- 1...Qxb4
- 2.cxb4#
- 1...Bxf5
- 2.exf5#
- 1...Qa4
- 2.c4#
- 1...Bb6
- 2.cxb6#
- 1...Bd6
- 2.cxd6#
- 1...Sf4
- 2.f7#
- threat
- 1.Be6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 2
- Sets
- Q(a);OGATE,XP(E)::QAB(A)+P(C),XQ(a)
- Q(a);N_GUARD::QAB(A)+P(C)
- S(f);N_GUARD::B(N)+P(K)
- S(f);CHECK,OGATE::B(N)+P(K),XS(f)
- Tries
- Try
- B(I);XP(b)
- Threat
- R(G)+P(H)
- Vars
- S(f);CHECK,OGATE::B(N)+P(K),XS(f)
- Q(a);OGATE,XP(E)::QAB(A)+P(C),XQ(a)
- Q(a);N_GUARD::QAB(A)+P(C)
- B(g);OGATE::R(G)+P(H),XB(g)
- S(f);N_GUARD::B(N)+P(K)
- Refutation
- Q(a);CHECK,XB(I)
- Try
- B(I);
- Threat
- R(G)+P(H)
- Vars
- S(f);CHECK,OGATE::B(N)+P(K),XS(f)
- Q(a);OGATE,XP(E)::QAB(A)+P(C),XQ(a)
- B(g);OGATE::R(G)+P(H),XB(g)
- S(f);N_GUARD::B(N)+P(K)
- Refutation
- Q(a);
- Try
- B(I);
- Threat
- R(G)+P(H)
- Vars
- S(f);CHECK,OGATE::B(N)+P(K),XS(f)
- Q(a);OGATE,XP(E)::QAB(A)+P(C),XQ(a)
- Q(a);N_GUARD::QAB(A)+P(C)
- B(g);OGATE::R(G)+P(H),XB(g)
- S(f);N_GUARD::B(N)+P(K)
- Refutation
- B(c);XP(J)
- Try
- B(I);
- Threat
- R(G)+P(H)
- Vars
- S(f);CHECK,OGATE::B(N)+P(K),XS(f)
- Q(a);OGATE,XP(E)::QAB(A)+P(C),XQ(a)
- Q(a);N_GUARD::QAB(A)+P(C)
- B(g);OGATE::R(G)+P(H),XB(g)
- Refutation
- S(f);
- Try
- B(I);
- Threat
- R(G)+P(H)
- Vars
- S(f);CHECK,OGATE::B(N)+P(K),XS(f)
- Q(a);OGATE,XP(E)::QAB(A)+P(C),XQ(a)
- Q(a);N_GUARD::QAB(A)+P(C)
- B(g);OGATE::R(G)+P(H),XB(g)
- S(f);N_GUARD::B(N)+P(K)
- Refutation
- B(c);XP(J)
- Try
- B(N);
- Threat
- B(N)+P(K)
- Vars
- S(f);CHECK,OGATE::B(N)+P(K),XS(f)
- Refutation
- B(g);
- Try
- Q(A);
- Threat
- QAB1(A)
- Vars
- S(f);CHECK,OGATE::B(N)+P(K),XS(f)
- Refutation
- Q(a);XP(E)
- Try
- Actual
- B(I);
- Threat
- R(G)+P(H)
- Vars
- S(f);CHECK,OGATE::B(N)+P(K),XS(f)
- Q(a);OGATE,XP(E)::QAB(A)+P(C),XQ(a)
- B(c);OGATE,XP(J)::R(B)+P(F),XB(c)
- Q(a);N_GUARD::QAB(A)+P(C)
- B(g);OGATE::R(G)+P(H),XB(g)
- S(f);N_GUARD::B(N)+P(K)
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).