MESON Chess Problem Database
Problem Display
PID: 275838 (b7/5q2/2n1pbN1/3B4/1r4R1/3kBP1R/r4p2/n1Q2K2 w - - 0 1)
Storm, Fredrik
Schackvarlden, 1940
#2
8 + 10
| 15601 | Albrecht-Leiss-Degener Collection | 2024 |
SOLUTION
- SOUND
- Sets
- 1...Rd2
- 2.Qxd2#
- 1...Ra3
- 2.Qd2#
- 1...Raa4
- 2.Qd2#
- 1...Ra5
- 2.Qd2#
- 1...Ra6
- 2.Qd2#
- 1...Ra7
- 2.Qd2#
- 1...Rb1
- 2.Sf4#
- 2.Bc4#
- 2.Be4#
- 1...Rb2
- 2.Sf4#
- 2.Bc4#
- 2.Be4#
- 1...Rb3
- 2.Sf4#
- 2.Bc4#
- 2.Be4#
- 1...Rc4
- 2.Bxc4#
- 1...Re4
- 2.Bxe4#
- 1...Rf4
- 2.Sxf4#
- 1...Rb5
- 2.Sf4#
- 2.Bc4#
- 2.Be4#
- 1...Rb6
- 2.Sf4#
- 2.Bc4#
- 2.Be4#
- 1...Rb7
- 2.Sf4#
- 2.Bc4#
- 2.Be4#
- 1...Rb8
- 2.Sf4#
- 2.Bc4#
- 2.Be4#
- 1...Bb2
- 2.Qd2#
- 1...Bd4
- 2.Be4#
- 1...Sc2
- 2.Qd2#
- 1...Sd4
- 2.Sf4#
- 1...Rd2
- Tries
- 1.Bxa2?
- threat
- 2.Qd2#
- 1...Rb1
- 2.Sf4#
- 2.Bc4#
- 1...Rb2
- 2.Sf4#
- 2.Bc4#
- 1...Sb3
- 2.Bb1#
- 1...Bc3!
- threat
- 1.Rxb4?
- threat
- 2.Sf4#
- 2.Bc4#
- 2.Be4#
- 1...Qxg6
- 2.Bc4#
- 1...Sxb4
- 2.Sf4#
- 2.Bc4#
- 1...exd5
- 2.Sf4#
- 1...Rd2
- 2.Qxd2#
- 1...Sc2
- 2.Qd2#
- 1...Qc7
- 2.Bc4#
- 2.Be4#
- 1...Bb2
- 2.Bc4#
- 2.Be4#
- 2.Qd2#
- 1...Bc3
- 2.Bc4#
- 2.Be4#
- 1...Bd4
- 2.Bc4#
- 2.Be4#
- 1...Bh4
- 2.Bc4#
- 2.Be4#
- 1...Be5
- 2.Bc4#
- 2.Be4#
- 1...Bg5
- 2.Bc4#
- 2.Be4#
- 1...Be7
- 2.Bc4#
- 2.Be4#
- 1...Bg7
- 2.Bc4#
- 2.Be4#
- 1...Bd8
- 2.Bc4#
- 2.Be4#
- 1...Bh8
- 2.Bc4#
- 2.Be4#
- 1...Sd4
- 2.Sf4#
- 2.Bc4#
- 1...Sa5
- 2.Sf4#
- 1...Se5
- 2.Sf4#
- 2.Rd4#
- 1...Sa7
- 2.Sf4#
- 2.Bc4#
- 1...Se7
- 2.Sf4#
- 2.Bc4#
- 1...Sb8
- 2.Sf4#
- 2.Bc4#
- 1...Sd8
- 2.Sf4#
- 2.Bc4#
- 1...e5
- 2.Be4#
- 1...Rc2!
- threat
- 1.Rc4?
- threat
- 2.Sf4#
- 2.Be4#
- 1...Rxc4
- 2.Bxc4#
- 1...exd5
- 2.Sf4#
- 1...Rd2
- 2.Qxd2#
- 1...Qc7
- 2.Be4#
- 1...Rc2
- 2.Sf4#
- 1...Bb2
- 2.Be4#
- 2.Qd2#
- 1...Bc3
- 2.Rxc3#
- 2.Qxc3#
- 1...Bd4
- 2.Be4#
- 1...Bh4
- 2.Be4#
- 2.Rc3#
- 2.Qc3#
- 1...Be5
- 2.Be4#
- 1...Bg5
- 2.Be4#
- 2.Rc3#
- 2.Qc3#
- 1...Be7
- 2.Be4#
- 2.Rc3#
- 2.Qc3#
- 1...Bg7
- 2.Be4#
- 1...Bd8
- 2.Be4#
- 2.Rc3#
- 2.Qc3#
- 1...Bh8
- 2.Be4#
- 1...Sc2
- 2.Sf4#
- 2.Qd2#
- 1...Sd4
- 2.Sf4#
- 2.Rc3#
- 2.Qc3#
- 1...Sa5
- 2.Sf4#
- 1...Se5
- 2.Sf4#
- 2.Rc3#
- 2.Qc3#
- 1...Sa7
- 2.Sf4#
- 1...Se7
- 2.Sf4#
- 1...Sb8
- 2.Sf4#
- 1...Sd8
- 2.Sf4#
- 1...e5
- 2.Be4#
- 2.Rc3#
- 2.Qc3#
- 1...Qxg6!
- threat
- 1.Rd4+?
- 1...Bxd4
- 2.Be4#
- 1...Sxd4
- 2.Sf4#
- 1...Rxd4!
- 1...Bxd4
- 1.Qd1+?
- 1...Kxe3
- 2.f4#
- 1...Rd2
- 2.Qxd2#
- 1...Kc3!
- 1...Kxe3
- 1.Bxa2?
- Keys
- 1.Bd4!
- threat
- 2.Qc3#
- 1...Rxd4
- 2.f4#
- 1...Bxd4
- 2.Be4#
- 1...Sxd4
- 2.Sf4#
- 1...Rc2
- 2.Qe3#
- 1...Ra3
- 2.Qd1#
- 1...Rb1
- 2.Bc4#
- 1...Rb3
- 2.Bc4#
- 1...Rc4
- 2.Bxc4#
- 1...Sc2
- 2.Qd1#
- threat
- 1.Bd4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 4
- REMOVED MATES = 8
- Sets
- R(b);N_GUARD::QAR1(A),XR(b)
- R(b);N_GUARD::QAR1(A)
- R(e);N_GUARD::B(G),XR(e)
- R(e);N_GUARD::S(H),XR(e)
- B(h);S_CUTR(b)::QAR1(A)
- B(h);S_CUTR(e)::B(G)
- S(a);S_CUTR(b)::QAR1(A)
- S(f);S_CUTR(e)::S(H)
- Tries
- Try
- B(G);XR(b)
- Threat
- QAR1(A)
- Vars
- S(a);N_GUARD,S_CUTR(e)::B(G)
- Refutation
- B(h);
- Try
- R(F);XR(e)
- Threat
- DUALS(3)
- Vars
- Q(i);XS(H)::B(G)
- P(g);XB(G)::S(H)
- R(b);N_GUARD::QAR1(A),XR(b)
- S(a);S_CUTR(b)::QAR1(A)
- S(f);::S(H)
- P(g);::B(G)
- Refutation
- R(b);
- Try
- R(F);
- Threat
- DUALS(2)
- Vars
- R(e);OGATE,XR(F)::B(G),XR(e)
- P(g);XB(G)::S(H)
- R(b);N_GUARD::QAR1(A),XR(b)
- Q(i);::B(G)
- R(b);::S(H)
- B(h);::B(G)
- S(f);::S(H)
- Refutation
- Q(i);XS(H)
- Try
- R(F);CHECK
- Vars
- B(h);XR(F)::B(G)
- S(f);XR(F)::S(H)
- Refutation
- R(e);XR(F)
- Try
- Q(A);CHECK
- Vars
- K(d);N_GUARD,P-FLIGHT,S_CUTR(b),XB(C)::R(E)+P(D)
- R(b);N_GUARD,P_SPINR(b)::QAR1(A),XR(b)
- Refutation
- K(d);P-FLIGHT
- Try
- Actual
- B(C);
- Threat
- QAR1(A)
- Vars
- R(e);SBLOCK,XB(C)::R(E)+P(D)
- B(h);SBLOCK,XB(C)::B(G)
- S(f);SBLOCK,XB(C)::S(H)
- R(b);SBLOCK::QAR1(A)
- R(b);N_GUARD::QAR2(A)
- R(e);N_GUARD,P_PINQ(A)::B(G)
- R(e);N_GUARD::B(G)
- R(e);N_GUARD::B(G),XR(e)
- S(a);S_CUTR(b)::QAR2(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).