MESON Chess Problem Database
Problem Display
PID: 16974 (8/1rPQ2n1/1p1B1p1K/3B1pN1/N1pkP2R/3q2P1/1pPn1P2/2bR4 w - - 0 1)
Buchwald, Julius
Hassberg, Eric Manfred
American Chess Bulletin, 1945
#2
13 + 11
| 145 | StrateGems | 1998 |
SOLUTION
- SOUND
- Sets
- 1...Qf1
- 2.Sf3#
- 1...Qf3
- 2.Sxf3#
- 1...Sf1
- 2.c3#
- 1...Sb3
- 2.c3#
- 1...Sf3
- 2.c3#
- 1...Sh5
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Se8
- 2.Se6#
- 1...fxg5
- 2.Qxg7#
- 1...Qf1
- Tries
- 1.Bc6?
- threat
- 2.Bf4#
- 1...Qxe4
- 2.Sf3#
- 1...Rxc7
- 2.Bxc7#
- 1...Sxe4
- 2.c3#
- 1...Qa3
- 2.exf5#
- 1...Se8
- 2.Se6#
- 1...f4
- 2.Bxf4#
- 1...c3!
- threat
- 1.Be6?
- threat
- 2.Bf4#
- 1...Qxe4
- 2.Sf3#
- 1...Rxc7
- 2.Bxc7#
- 1...Sxe4
- 2.c3#
- 1...fxg5
- 2.Qxg7#
- 1...Qa3
- 2.exf5#
- 1...f4
- 2.Bxf4#
- 1...Se8!
- threat
- 1.Bxb7?
- threat
- 2.Bf4#
- 1...Qxe4
- 2.Sf3#
- 1...Sxe4
- 2.c3#
- 1...Qa3
- 2.exf5#
- 1...Se8
- 2.Se6#
- 1...f4
- 2.Bxf4#
- 1...c3!
- threat
- 1.Bf7?
- threat
- 2.Bf4#
- 1...Qxe4
- 2.Sf3#
- 1...Rxc7
- 2.Bxc7#
- 1...Sxe4
- 2.c3#
- 1...Qa3
- 2.exf5#
- 1...Se8
- 2.Se6#
- 1...f4
- 2.Bxf4#
- 1...fxg5!
- threat
- 1.Bc5+?
- 1...Ke5
- 2.Sf7#
- 2.Qd6#
- 2.f4#
- 1...bxc5!
- 1...Ke5
- 1.Be5+?
- 1...fxe5
- 2.Bc6#
- 2.Be6#
- 2.Bxb7#
- 2.Bf7#
- 2.Bg8#
- 1...Kxe5!
- 1...fxe5
- 1.Bc6?
- Keys
- 1.Bg8!
- threat
- 2.Bf4#
- 1...Qxe4
- 2.Sf3#
- 1...Rxc7
- 2.Bxc7#
- 1...Sxe4
- 2.c3#
- 1...fxg5
- 2.Qxg7#
- 1...Qa3
- 2.exf5#
- 1...Se8
- 2.Se6#
- 1...f4
- 2.Bxf4#
- threat
- 1.Bg8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 7
- Sets
- Q(d);N_GUARD,P_SPINS(c)::S(I)
- Q(d);N_GUARD,P_SPINS(c)::S(I),XQ(d)
- S(c);P_PINS(I),P_SPINQ(d)::P(B)
- S(k);N_GUARD::S(I)
- S(k);N_GUARD::S(I),XS(k)
- P(i);OGATEB,XS(I)::QAB(M),XS(k)
- Tries
- Try
- B(H);
- Threat
- QAR(M)+B(J)
- Vars
- Q(d);N_GUARD,P_SPINQ(d),P_SPINS(c),XP(F)::S(I)
- R(j);OGATE,XP(L)::QAR(M)+B(J),XR(j)
- S(c);P_PINS(I),P_SPINQ(d),P_SPINS(c),XP(F)::P(B)
- Q(d);N_GUARD,P_SPINS(c)::R(G)+P(F),XP(g)
- S(k);N_GUARD::S(I)
- P(g);::QAR(M)+B(J),XP(g)
- Refutation
- P(e);
- Try
- B(H);
- Threat
- QAR(M)+B(J)
- Vars
- Q(d);N_GUARD,P_SPINQ(d),P_SPINS(c),XP(F)::S(I)
- R(j);OGATE,XP(L)::QAR(M)+B(J),XR(j)
- S(c);P_PINS(I),P_SPINQ(d),P_SPINS(c),XP(F)::P(B)
- P(i);OGATEB,XS(I)::QAB(M),XS(k)
- Q(d);N_GUARD,P_SPINS(c)::R(G)+P(F),XP(g)
- P(g);::QAR(M)+B(J),XP(g)
- Refutation
- S(k);
- Try
- B(H);XR(j)
- Threat
- QAR(M)+B(J)
- Vars
- Q(d);N_GUARD,P_SPINQ(d),P_SPINS(c),XP(F)::S(I)
- S(c);P_PINS(I),P_SPINQ(d),P_SPINS(c),XP(F)::P(B)
- Q(d);N_GUARD,P_SPINS(c)::R(G)+P(F),XP(g)
- S(k);N_GUARD::S(I)
- P(g);::QAR(M)+B(J),XP(g)
- Refutation
- P(e);
- Try
- B(H);
- Threat
- QAR(M)+B(J)
- Vars
- Q(d);N_GUARD,P_SPINQ(d),P_SPINS(c),XP(F)::S(I)
- R(j);OGATE,XP(L)::QAR(M)+B(J),XR(j)
- S(c);P_PINS(I),P_SPINQ(d),P_SPINS(c),XP(F)::P(B)
- Q(d);N_GUARD,P_SPINS(c)::R(G)+P(F),XP(g)
- S(k);N_GUARD::S(I)
- P(g);::QAR(M)+B(J),XP(g)
- Refutation
- P(i);XS(I)
- Try
- B(J);CHECK
- Refutation
- P(h);XB(J)
- Try
- B(J);CHECK
- Refutation
- K(f);S_FLIGHT,XB(J)
- Try
- Actual
- B(H);
- Threat
- QAR(M)+B(J)
- Vars
- Q(d);N_GUARD,P_SPINQ(d),P_SPINS(c),XP(F)::S(I)
- R(j);OGATE,XP(L)::QAR(M)+B(J),XR(j)
- S(c);P_PINS(I),P_SPINQ(d),P_SPINS(c),XP(F)::P(B)
- P(i);OGATEB,XS(I)::QAB(M),XS(k)
- Q(d);N_GUARD,P_SPINS(c)::R(G)+P(F),XP(g)
- S(k);N_GUARD::S(I)
- P(g);::QAR(M)+B(J),XP(g)
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).