MESON Chess Problem Database
Problem Display
PID: 283126 (2bR4/B1p1rN2/1N4pK/2n3R1/1pPpk3/q5Pp/r1nP4/1B3Q2 w - - 0 1)
Swane, Jan Arnold Willem
Probleemblad, 1957
#2
11 + 12
| 5454 | Near Snap | 2026 |
SOLUTION
- SOUND
- Sets
- 1...Qc1
- 2.Qe2#
- 1...Qb2
- 2.Qe2#
- 1...Qd3
- 2.Qf4#
- 1...Qa4
- 2.Qe2#
- 1...Qa5
- 2.Qe2#
- 1...Qa6
- 2.Qe2#
- 1...Qxa7
- 2.Qe2#
- 1...Re5
- 2.Rxe5#
- 1...Re6
- 2.Rg4#
- 1...Rd7
- 2.Rg4#
- 2.Re5#
- 1...Bg4
- 2.Rxg4#
- 1...Ba6
- 2.Rg4#
- 1...Be6
- 2.Re5#
- 1...Bb7
- 2.Rg4#
- 1...Sb3
- 2.Qe2#
- 1...Sd3
- 2.Qh1#
- 1...Se6
- 2.Re5#
- 1...Sd7
- 2.Rg4#
- 1...b3
- 2.Qe2#
- 1...d3
- 2.Qh1#
- 2.Qf4#
- 1...cxb6
- 2.Sd6#
- 1...c6
- 2.Sd6#
- 1...Qc1
- Tries
- 1.Sd7?
- threat
- 2.Sxc5#
- 2.Sf6#
- 2.Rg4#
- 1...Qxg3
- 2.Sxc5#
- 2.Sf6#
- 1...Qxa7
- 2.Sf6#
- 2.Rg4#
- 2.Qe2#
- 1...Rxd7
- 2.Rg4#
- 2.Re5#
- 1...Rxf7
- 2.Sxc5#
- 2.Re5#
- 1...Sxd7
- 2.Rg4#
- 1...Qe3
- 2.Sxc5#
- 2.Sf6#
- 1...Qf3
- 2.Sxc5#
- 1...Qa5
- 2.Sf6#
- 2.Rg4#
- 2.Qe2#
- 1...Qa6
- 2.Sxc5#
- 2.Rg4#
- 2.Qe2#
- 1...Re5
- 2.Sf6#
- 2.Rg4#
- 2.Rxe5#
- 1...Re6
- 2.Sxc5#
- 2.Rg4#
- 1...Sb3
- 2.Sf6#
- 2.Rg4#
- 2.Qe2#
- 1...Sd3
- 2.Sf6#
- 2.Qh1#
- 1...Sa4
- 2.Sf6#
- 2.Rg4#
- 1...Sa6
- 2.Sf6#
- 2.Rg4#
- 1...Se6
- 2.Sf6#
- 2.Re5#
- 1...Sb7
- 2.Sf6#
- 2.Rg4#
- 1...b3
- 2.Sf6#
- 2.Rg4#
- 2.Qe2#
- 1...Bxd7!
- threat
- 1.Bxc2+?
- 1...Qd3
- 2.Qe2#
- 2.Qh1#
- 2.Qf4#
- 1...Sd3
- 2.Qe2#
- 2.Qh1#
- 2.Qf4#
- 1...d3
- 2.Qe2#
- 2.Qh1#
- 2.Qf4#
- 1...Rxc2!
- 1...Qd3
- 1.Sd7?
- Keys
- 1.Sa4!
- threat
- 2.Sxc5#
- 1...Qxa4
- 2.Qe2#
- 1...Sxa4
- 2.Rxd4#
- 1...Re5
- 2.Rxe5#
- 1...Sb3
- 2.Qe2#
- 1...Sd3
- 2.Qh1#
- 1...Sa6
- 2.Rxd4#
- 1...Se6
- 2.Re5#
- 1...Sb7
- 2.Rxd4#
- 1...Sd7
- 2.Rg4#
- 1...b3
- 2.Qe2#
- threat
- 1.Sa4!
Anticipated by 132040(1952/II)
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 13
- Sets
- Q(c);N_GUARD::QAR2(B)
- Q(c);N_SPINS(b),SBLOCK::QAR1(B)
- Q(c);N_GUARD,XB(I)::QAR2(B)
- R(k);N_GUARD::R1(F),XR(k)
- R(k);S_CUTB(l)::R(F)
- B(l);N_GUARD::R(F),XB(l)
- B(l);N_GUARD::R(F)
- B(l);S_CUTR(k)::R1(F)
- S(h);S_CUTQ(c)::QAR2(B)
- S(h);N_SPINS(b),SBLOCK,S_CUTQ(c)::QAB(B)
- S(h);S_CUTR(k)::R1(F)
- S(h);S_CUTB(l)::R(F)
- P(e);S_CUTQ(c)::QAR2(B)
- P(j);N_GUARD,XS(G)::S(J)
- P(j);N_GUARD::S(J)
- Tries
- Try
- S(G);
- Threat
- DUALS(3)
- Vars
- S(h);XS(G)::R(F)
- Q(c);::S(G),XS(h)
- Refutation
- B(l);XS(G)
- Try
- B(A);CHECK,XS(b)
- Refutation
- R(a);XB(A)
- Try
- Actual
- S(G);
- Threat
- S(G),XS(h)
- Vars
- Q(c);N_GUARD,XS(G)::QAR2(B)
- S(h);XS(G)::R1(K),XP(f)
- R(k);N_GUARD::R1(F),XR(k)
- S(h);S_CUTQ(c)::QAR2(B)
- S(h);N_SPINS(b),SBLOCK,S_CUTQ(c)::QAB(B)
- S(h);::R1(K),XP(f)
- S(h);S_CUTR(k)::R1(F)
- S(h);S_CUTB(l)::R(F)
- P(e);S_CUTQ(c)::QAR2(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).