MESON Chess Problem Database
Problem Display
PID: 115732 (7q/4p3/n1P1k1P1/1N2P1rN/2KB2p1/1B4rb/1p2R2n/1Qb2R2 w - - 0 1)
Eriksson, Finn Olof
Vart Hem, 1938
#2
11 + 11
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qxe5
- 2.Sg7#
- 1...Qg7
- 2.Sxg7#
- 1...Qa8
- 2.Sg7#
- 1...Qb8
- 2.Sg7#
- 1...Qc8
- 2.Sg7#
- 1...Qd8
- 2.Sg7#
- 1...Qe8
- 2.Sg7#
- 1...Rg1
- 2.Kc3#
- 2.Kd3#
- 1...Rg2
- 2.Kc3#
- 2.Kd3#
- 1...Rc3+
- 2.Kxc3#
- 1...Rd3
- 2.Kxd3#
- 1...Re3
- 2.Sf4#
- 1...Rxe5
- 2.Qf5#
- 1...Rf5
- 2.Qxf5#
- 1...Rxg6
- 2.Qf5#
- 1...Be3
- 2.Kc3#
- 2.Kd3#
- 1...Bf4
- 2.Sxf4#
- 1...Sf3
- 2.Kc3#
- 1...Sb4
- 2.Sc7#
- 1...Sc5
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...Sb8
- 2.Sc7#
- 1...Qxe5
- Tries
- 1.Bc3?
- threat
- 2.Kd4#
- 2.Sd4#
- 1...Rxc3+
- 2.Kxc3#
- 1...Qxe5
- 2.Sg7#
- 1...Rxe5
- 2.Kd4#
- 2.Qf5#
- 1...Qd8
- 2.Sg7#
- 1...Rd3
- 2.Kxd3#
- 1...Re3
- 2.Kd4#
- 2.Sf4#
- 1...Be3
- 2.Kd3#
- 1...Bg2
- 2.Sd4#
- 1...Sb4
- 2.Kxb4#
- 2.Sd4#
- 2.Sc7#
- 1...Sc5
- 2.Kxc5#
- 2.Sd4#
- 2.Sc7#
- 1...Sc7
- 2.Sd4#
- 2.Sxc7#
- 1...Sf3!
- threat
- 1.Rf3?
- threat
- 2.Kc3#
- 2.Kd3#
- 1...Sxf3
- 2.Kc3#
- 1...gxf3
- 2.Kc3#
- 1...Qd8
- 2.Sg7#
- 1...Bd2
- 2.Kd3#
- 1...Bf4
- 2.Kc3#
- 2.Sxf4#
- 1...Sb4
- 2.Kxb4#
- 2.Sc7#
- 1...Sc5
- 2.Kxc5#
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...Rxf3!
- threat
- 1.Re3?
- threat
- 2.Kc3#
- 2.Kd3#
- 2.Sf4#
- 1...Qxe5
- 2.Kc3#
- 2.Kd3#
- 2.Sg7#
- 1...Qxh5
- 2.Kc3#
- 2.Kd3#
- 1...Rxe3
- 2.Sf4#
- 1...Rxe5
- 2.Kc3#
- 2.Kd3#
- 2.Qf5#
- 1...Rxh5
- 2.Kc3#
- 2.Kd3#
- 1...Rxg6
- 2.Kc3#
- 2.Kd3#
- 2.Qf5#
- 1...Bxe3
- 2.Kc3#
- 2.Kd3#
- 1...Sxf1
- 2.Kc3#
- 2.Sf4#
- 1...Qf6
- 2.Kc3#
- 2.Kd3#
- 1...Qd8
- 2.Sf4#
- 2.Sg7#
- 1...Qf8
- 2.Kc3#
- 2.Kd3#
- 1...Rf3
- 2.Kc3#
- 1...Rf5
- 2.Kc3#
- 2.Kd3#
- 2.Qxf5#
- 1...Bd2
- 2.Kd3#
- 2.Sf4#
- 1...Bg2
- 2.Sf4#
- 1...Sf3
- 2.Kc3#
- 2.Sf4#
- 1...Sb4
- 2.Kxb4#
- 2.Sc7#
- 2.Sf4#
- 1...Sc5
- 2.Kxc5#
- 2.Sc7#
- 2.Sf4#
- 1...Sc7
- 2.Sxc7#
- 2.Sf4#
- 1...Bxf1+!
- threat
- 1.Bc3?
- Keys
- 1.Bxb2!
- threat
- 2.Sd4#
- 1...Rc3+
- 2.Kxc3#
- 1...Qxe5
- 2.Sg7#
- 1...Rxe5
- 2.Qf5#
- 1...Bxb2
- 2.Sf4#
- 1...Qd8
- 2.Sg7#
- 1...Rd3
- 2.Kxd3#
- 1...Re3
- 2.Sf4#
- 1...Be3
- 2.Kd3#
- 1...Sf3
- 2.Kc3#
- threat
- 1.Bxb2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 12
- Sets
- Q(k);N_GUARD,P_SPINQ(k),XP(H)::S(I)
- Q(k);N_GUARD::S(I),XQ(k)
- Q(k);N_GUARD::S(I)
- Q(k);N_GUARD,P_PINP(J)::S(I)
- R(d);CHECK::B(D)+K(E),XR(d)
- R(d);::B(D)+K(E),XR(d)
- R(d);S_CUTB(a)::S(I)
- R(g);N_GUARD,P_SPINR(g),XP(H)::QAB1(A)
- R(g);N_GUARD::QAB1(A),XR(g)
- R(g);N_GUARD,XP(K)::QAB1(A)
- B(a);N_GUARD::S(I),XB(a)
- S(c);::B(D)+K(E)
- S(h);N_GUARD::S(G)
- S(h);N_GUARD::S(G),XS(h)
- Tries
- Try
- B(F);
- Threat
- DUALS(2)
- Vars
- R(d);CHECK,XB(F)::B(D)+K(E),XR(d)
- Q(k);N_GUARD,P_SPINQ(k),XP(H)::S(I)
- Q(k);N_GUARD::S(I)
- R(d);::B(D)+K(E),XR(d)
- B(a);::B(D)+K(E)
- B(e);::S(G)
- Refutation
- S(c);
- Try
- R(B);
- Threat
- DUALS(2)
- Vars
- S(c);XR(B)::B(D)+K(E)
- P(f);XR(B)::B(D)+K(E)
- Q(k);N_GUARD::S(I)
- B(a);::B(D)+K(E)
- S(h);N_GUARD::S(G),XS(h)
- Refutation
- R(d);XR(B)
- Try
- R(C);
- Threat
- DUALS(3)
- Vars
- R(d);XR(C)::S(I)
- R(d);::B(D)+K(E)
- B(e);::S(I)
- Refutation
- B(e);CHECK,XR(B)
- Try
- Actual
- B(F);XP(b)
- Threat
- S(G)
- Vars
- R(d);CHECK::B(D)+K(E),XR(d)
- Q(k);N_GUARD,P_SPINQ(k),XP(H)::S(I)
- R(g);N_GUARD,P_SPINR(g),XP(H)::QAB1(A)
- B(a);N_GUARD,XB(F)::S(I)
- Q(k);N_GUARD::S(I)
- R(d);::B(D)+K(E),XR(d)
- R(d);S_CUTB(a)::S(I)
- B(a);::B(D)+K(E)
- S(c);::B(D)+K(E)
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).