MESON Chess Problem Database
Problem Display
PID: 169931 (Q2R4/4r1p1/1nn3p1/3r1RpN/p3k3/1NK1p1BB/4P3/8 w - - 0 1)
Schrammli, Emil
Schweizerische Arbeiter Schachzeitung, 1945
#2
9 + 10
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Rd1
- 2.Sc5#
- 1...Rd2
- 2.Sc5#
- 1...Rd3+
- 2.exd3#
- 1...Rd4
- 2.Sc5#
- 2.Rxd4#
- 1...Ra5
- 2.Rd4#
- 1...Rb5
- 2.Rd4#
- 1...Rc5+
- 2.Sxc5#
- 1...Rde5
- 2.Rd4#
- 1...Rxf5
- 2.Rd4#
- 1...Rd6
- 2.Sc5#
- 1...Rdd7
- 2.Sc5#
- 1...Rxd8
- 2.Sc5#
- 1...Sb4
- 2.Sc5#
- 1...Sd4
- 2.Sc5#
- 1...Sa5
- 2.Sc5#
- 1...Se5
- 2.Sc5#
- 1...Sa7
- 2.Sc5#
- 1...Sb8
- 2.Sc5#
- 1...Sxd8
- 2.Sc5#
- 1...gxf5
- 2.Bg2#
- 1...Rd1
- Tries
- 1.Sxg7?
- threat
- 2.Bg2#
- 1...Rd3+
- 2.exd3#
- 1...Rc5+
- 2.Sxc5#
- 1...Rxf5
- 2.Rd4#
- 1...Sd4
- 2.Sc5#
- 1...Se5
- 2.Sc5#
- 1...Rxg7!
- threat
- 1.Bh2?
- threat
- 2.Sg3#
- 1...Rd3+
- 2.exd3#
- 1...Rc5+
- 2.Sxc5#
- 1...Rxf5
- 2.Rd4#
- 1...gxf5
- 2.Bg2#
- 1...gxh5!
- threat
- 1.Bc7?
- threat
- 2.Sg3#
- 1...Rd3+
- 2.exd3#
- 1...Rc5+
- 2.Sxc5#
- 1...gxh5!
- threat
- 1.Bb8?
- threat
- 2.Sg3#
- 1...Rd3+
- 2.exd3#
- 1...Rc5+
- 2.Sxc5#
- 1...gxh5!
- threat
- 1.Rf1?
- threat
- 2.Bg2#
- 1...Rd3+
- 2.exd3#
- 1...Rc5+
- 2.Sxc5#
- 1...Rf5
- 2.Rd4#
- 1...Sd4
- 2.Sc5#
- 1...Se5
- 2.Sc5#
- 1...Rf7!
- threat
- 1.Rf4+?
- 1...Ke5
- 2.Rxa4#
- 2.Rb4#
- 2.Rc4#
- 2.Rd4#
- 2.Rh4#
- 1...gxf4!
- 1...Ke5
- 1.Rfxd5?
- threat
- 2.Sc5#
- 2.Bg2#
- 2.Rd4#
- 1...Sxa8
- 2.Sc5#
- 2.Bg2#
- 1...axb3
- 2.Bg2#
- 2.Rd4#
- 1...Rd7
- 2.Bg2#
- 2.Re5#
- 1...Sd7
- 2.Bg2#
- 2.Rd4#
- 1...Rf7
- 2.Sc5#
- 2.Rd4#
- 2.Re5#
- 1...Re5
- 2.Sc5#
- 2.Rd4#
- 2.Rxe5#
- 1...Rb7
- 2.Sc5#
- 2.Bg2#
- 1...Sd4
- 2.Sc5#
- 2.Rxd4#
- 2.Re5#
- 1...Se5
- 2.Sc5#
- 2.Rd4#
- 2.Rxe5#
- 1...g4
- 2.Sc5#
- 2.Bg2#
- 1...Sxd5+!
- threat
- 1.Re5+?
- 1...Rdxe5
- 2.Rd4#
- 1...Sxe5
- 2.Sc5#
- 1...Rexe5!
- 1...Rdxe5
- 1.Rf7?
- threat
- 2.Bg2#
- 1...Rd3+
- 2.exd3#
- 1...Rc5+
- 2.Sxc5#
- 1...Rf5
- 2.Rd4#
- 1...Sd4
- 2.Sc5#
- 1...Se5
- 2.Sc5#
- 1...Rxf7!
- threat
- 1.Rff8?
- threat
- 2.Bg2#
- 1...Rd3+
- 2.exd3#
- 1...Rc5+
- 2.Sxc5#
- 1...Rf5
- 2.Rd4#
- 1...Sd4
- 2.Sc5#
- 1...Se5
- 2.Sc5#
- 1...Rf7!
- threat
- 1.Rdxd5?
- threat
- 2.Sc5#
- 2.Bg2#
- 2.Rd4#
- 1...Sxa8
- 2.Sc5#
- 2.Bg2#
- 1...axb3
- 2.Bg2#
- 2.Rd4#
- 1...gxf5
- 2.Bg2#
- 2.Rd4#
- 1...Re5
- 2.Rd4#
- 2.Rdxe5#
- 1...Rb7
- 2.Sc5#
- 2.Bg2#
- 1...Rd7
- 2.Sc5#
- 2.Bg2#
- 2.Rde5#
- 1...Sd7
- 2.Bg2#
- 2.Rd4#
- 1...Sd4
- 2.Sc5#
- 2.Rxd4#
- 2.Rde5#
- 1...Se5
- 2.Sc5#
- 2.Rd4#
- 2.Rdxe5#
- 1...g4
- 2.Sc5#
- 2.Bg2#
- 1...Sxd5+!
- threat
- 1.Sxg7?
- Keys
- 1.Rf6!
- threat
- 2.Bg2#
- 1...Rd3+
- 2.exd3#
- 1...Rc5+
- 2.Sxc5#
- 1...gxf6
- 2.Sxf6#
- 1...Rf5
- 2.Rd4#
- 1...Sd4
- 2.Sc5#
- 1...Se5
- 2.Sc5#
- threat
- 1.Rf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 14
- Sets
- R(d);N_GUARD,P_SPINS(g)::S(B)
- R(d);CHECK,OGATE,P_SPINS(g)::P(A),XR(d)
- R(d);OGATE,P_SPINS(g)::R1(I)
- R(d);CHECK,N_GUARD,P_SPINS(g)::S(B),XR(d)
- R(d);OGATE,P_SPINS(g),XR(F)::R1(I)
- R(d);N_GUARD,P_SPINS(g),XR(I)::S(B)
- S(g);P_SPINR(d)::S(B)
- S(g);P_SPINR(d),XR(I)::S(B)
- P(h);SBLOCK,XR(F)::B(E)
- Tries
- Try
- S(G);XP(j)
- Threat
- B(E)
- Vars
- R(d);CHECK,OGATE,P_SPINS(g)::P(A),XR(d)
- R(d);CHECK,N_GUARD,P_SPINS(g)::S(B),XR(d)
- R(d);OGATE,P_SPINS(g),XR(F)::R1(I)
- S(g);P_SPINR(d)::S(B)
- Refutation
- R(i);XS(G)
- Try
- B(D);
- Threat
- S(G)
- Vars
- R(d);CHECK,OGATE,P_SPINS(g)::P(A),XR(d)
- R(d);CHECK,N_GUARD,P_SPINS(g)::S(B),XR(d)
- R(d);OGATE,P_SPINS(g),XR(F)::R1(I)
- P(h);SBLOCK,XR(F)::B(E)
- Refutation
- P(h);XS(G)
- Try
- B(D);
- Threat
- S(G)
- Vars
- R(d);CHECK,OGATE,P_SPINS(g)::P(A),XR(d)
- R(d);CHECK,N_GUARD,P_SPINS(g)::S(B),XR(d)
- Refutation
- P(h);XS(G)
- Try
- B(D);
- Threat
- S(G)
- Vars
- R(d);CHECK,OGATE,P_SPINS(g)::P(A),XR(d)
- R(d);CHECK,N_GUARD,P_SPINS(g)::S(B),XR(d)
- Refutation
- P(h);XS(G)
- Try
- R(F);
- Threat
- B(E)
- Vars
- R(d);CHECK,OGATE,P_SPINS(g)::P(A),XR(d)
- R(d);CHECK,N_GUARD,P_SPINS(g)::S(B),XR(d)
- R(d);OGATE,P_SPINS(g)::R1(I)
- S(g);P_SPINR(d)::S(B)
- Refutation
- R(i);
- Try
- R(F);CHECK
- Refutation
- P(e);XR(F)
- Try
- R(F);XR(d)
- Threat
- DUALS(3)
- Refutation
- S(f);CHECK,XR(F)
- Try
- R(F);CHECK
- Vars
- R(d);OGATE,P_SPINS(g),XR(F)::R1(I)
- S(g);P_SPINR(d),XR(F)::S(B)
- Refutation
- R(i);XR(F)
- Try
- R(F);
- Threat
- B(E)
- Vars
- R(d);CHECK,OGATE,P_SPINS(g)::P(A),XR(d)
- R(d);CHECK,N_GUARD,P_SPINS(g)::S(B),XR(d)
- R(d);OGATE,P_SPINS(g)::R1(I)
- S(g);P_SPINR(d)::S(B)
- Refutation
- R(i);XR(F)
- Try
- R(F);
- Threat
- B(E)
- Vars
- R(d);CHECK,OGATE,P_SPINS(g)::P(A),XR(d)
- R(d);CHECK,N_GUARD,P_SPINS(g)::S(B),XR(d)
- R(d);OGATE,P_SPINS(g)::R1(I)
- S(g);P_SPINR(d)::S(B)
- Refutation
- R(i);
- Try
- R(I);XR(d)
- Threat
- DUALS(3)
- Refutation
- S(f);CHECK,XR(I)
- Try
- Actual
- R(F);
- Threat
- B(E)
- Vars
- R(d);CHECK,OGATE,P_SPINS(g)::P(A),XR(d)
- R(d);CHECK,N_GUARD,P_SPINS(g)::S(B),XR(d)
- P(j);XR(F)::S(G),XP(j)
- R(d);OGATE,P_SPINS(g)::R1(I)
- S(g);P_SPINR(d)::S(B)
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).