MESON Chess Problem Database
Problem Display
PID: 89761 (5Q2/K2b4/3Pr3/p1RNP1N1/1PPk4/R3p3/4Br1B/4n3 w - - 0 1)
Casa, Alex
2nd Prize, Die Schwalbe, 1953/I
#2
12 + 7
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rxe2
- 2.Qf4#
- 1...Rg2
- 2.Qf4#
- 1...Rxh2
- 2.Qf4#
- 1...Rf4
- 2.Qxf4#
- 1...Sc2
- 2.Rd3#
- 1...Sg2
- 2.Rd3#
- 1...Sd3
- 2.Rxd3#
- 1...Sf3
- 2.Rd3#
- 2.Qf4#
- 1...Rxe2
- Tries
- 1.Sc3?
- threat
- 2.Rd5#
- 1...Rxe2
- 2.Sxe2#
- 1...Rxe5
- 2.Bxe5#
- 1...Rxd6
- 2.Qxd6#
- 1...Bc6
- 2.Sxe6#
- 1...Sd3!
- threat
- 1.Sxe3?
- threat
- 2.Rd5#
- 1...Rxe5
- 2.Bxe5#
- 1...Rxd6
- 2.Qxd6#
- 1...Sd3
- 2.Sc2#
- 2.Rxd3#
- 1...Bc6!
- threat
- 1.Sf4?
- threat
- 2.Rd5#
- 1...Rxe2
- 2.Sxe2#
- 1...Rxd6
- 2.Qxd6#
- 1...Bc6
- 2.Sfxe6#
- 1...Sd3
- 2.Rxd3#
- 1...Rxe5!
- threat
- 1.Sb6?
- threat
- 2.Rd5#
- 1...Rxe5
- 2.Bxe5#
- 1...Rxd6
- 2.Qxd6#
- 1...Bc6!
- threat
- 1.Sf6?
- threat
- 2.Rd5#
- 1...Rxe5
- 2.Bxe5#
- 1...Rxd6
- 2.Qxd6#
- 1...Bc6
- 2.Sxe6#
- 1...Sd3
- 2.Rxd3#
- 1...Rxe2!
- threat
- 1.Se7?
- threat
- 2.Rd5#
- 1...Rxe2
- 2.Sf5#
- 2.Qf4#
- 1...Rxe5
- 2.Bxe5#
- 1...Bc6
- 2.Sxc6#
- 1...Sd3
- 2.Rxd3#
- 1...Rxd6!
- threat
- 1.Sf3+?
- 1...Ke4
- 2.Sc3#
- 2.Rxe3#
- 2.Qf4#
- 1...Sxf3
- 2.Qf4#
- 1...Rxf3!
- 1...Ke4
- 1.Sxe6+?
- 1...Ke4
- 2.Sc3#
- 2.Rxe3#
- 1...Bxe6!
- 1...Ke4
- 1.Rxe3?
- threat
- 2.Re4#
- 1...Rxe2
- 2.Qf4#
- 1...Rxe5
- 2.Bxe5#
- 1...Rf4
- 2.Qxf4#
- 1...axb4!
- threat
- 1.Sc3?
- Keys
- 1.Sc7!
- threat
- 2.Rd5#
- 1...Rxe2
- 2.Qf4#
- 1...Rxe5
- 2.Bxe5#
- 1...Rxd6
- 2.Qxd6#
- 1...Bc6
- 2.Scxe6#
- 1...Sd3
- 2.Rxd3#
- threat
- 1.Sc7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 5
- Sets
- R(b);N_GUARD,XB(A)::QAR2(L)
- R(b);N_GUARD::QAR2(L)
- R(b);N_GUARD,XB(B)::QAR2(L)
- R(b);N_GUARD::QAR2(L),XR(b)
- S(a);N_GUARD::R1(C)
- S(a);N_GUARD::R1(C),XS(a)
- Tries
- Try
- S(G);
- Threat
- R1(F)
- Vars
- R(b);XB(A)::S(G),XR(b)
- R(f);OGATE,XP(H)::B(B),XR(f)
- R(f);OGATE,XP(J)::QAR2(L),XR(f)
- B(g);N_GUARD::S(I),XR(f)
- Refutation
- S(a);
- Try
- S(G);XP(c)
- Threat
- R1(F)
- Vars
- R(f);OGATE,XP(H)::B(B),XR(f)
- R(f);OGATE,XP(J)::QAR2(L),XR(f)
- Refutation
- B(g);
- Try
- S(G);
- Threat
- R1(F)
- Vars
- R(b);XB(A)::S(G),XR(b)
- R(f);OGATE,XP(J)::QAR2(L),XR(f)
- B(g);N_GUARD::S(G),XR(f)
- S(a);N_GUARD::R1(C),XS(a)
- Refutation
- R(f);XP(H)
- Try
- S(G);
- Threat
- R1(F)
- Vars
- R(f);OGATE,XP(H)::B(B),XR(f)
- R(f);OGATE,XP(J)::QAR2(L),XR(f)
- Refutation
- B(g);
- Try
- S(G);
- Threat
- R1(F)
- Vars
- R(f);OGATE,XP(H)::B(B),XR(f)
- R(f);OGATE,XP(J)::QAR2(L),XR(f)
- B(g);N_GUARD::S(I),XR(f)
- S(a);N_GUARD::R1(C),XS(a)
- Refutation
- R(b);XB(A)
- Try
- S(G);
- Threat
- R1(F)
- Vars
- R(f);OGATE,XP(H)::B(B),XR(f)
- B(g);N_GUARD::S(G),XB(g)
- S(a);N_GUARD::R1(C),XS(a)
- Refutation
- R(f);XP(J)
- Try
- S(I);CHECK
- Vars
- S(a);XS(I)::QAR2(L)
- Refutation
- R(b);XS(I)
- Try
- S(I);CHECK,XR(f)
- Refutation
- B(g);XS(I)
- Try
- R(C);XP(c)
- Threat
- R1(C)
- Vars
- R(b);N_GUARD,XB(A)::QAR2(L)
- R(f);OGATE,XP(H)::B(B),XR(f)
- R(b);N_GUARD::QAR2(L),XR(b)
- Refutation
- P(e);XP(D)
- Try
- Actual
- S(G);
- Threat
- R1(F)
- Vars
- R(b);N_GUARD,XB(A)::QAR2(L)
- R(f);OGATE,XP(H)::B(B),XR(f)
- R(f);OGATE,XP(J)::QAR2(L),XR(f)
- B(g);N_GUARD::S(G),XR(f)
- S(a);N_GUARD::R1(C),XS(a)
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).