MESON Chess Problem Database
Problem Display
PID: 227596 (b7/1n3B2/1p3N2/1NpRpkB1/1p5P/1p6/1K2Pq2/5R1n w - - 0 1)
van Dijk, Johannes
Tijdschrift vd NSB, 1926
#2
9 + 10
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qxf1
- 2.e4#
- 1...Qf3
- 2.Rxf3#
- 2.e4#
- 1...Qf4
- 2.Rxf4#
- 2.e4#
- 1...Sg3
- 2.Rxf2#
- 1...Sa5
- 2.Sd6#
- 1...Sd6
- 2.Sxd6#
- 1...Sd8
- 2.Sd6#
- 1...c4
- 2.Sd4#
- 1...Qxf1
- Tries
- 1.Kb1?
- threat
- 2.e4#
- 1...Sg3
- 2.Rxf2#
- 1...Sd6
- 2.Sxd6#
- 1...Qxf1+!
- threat
- 1.Rdd1?
- 1...Qxf1
- 2.e4#
- 1...e4
- 2.Rd5#
- 1...Sa5
- 2.Sd6#
- 1...Qf3
- 2.Rxf3#
- 2.e4#
- 1...Qf4
- 2.e4#
- 1...Sg3
- 2.Rxf2#
- 1...Sd6
- 2.Sxd6#
- 1...Sd8
- 2.Sd6#
- 1...c4!
- 1...Qxf1
- 1.Rd3?
- 1...Qxf1
- 2.e4#
- 1...e4
- 2.Rd5#
- 1...Sa5
- 2.Sd6#
- 1...Qf3
- 2.Rfxf3#
- 2.Rdxf3#
- 2.e4#
- 1...Qf4
- 2.e4#
- 1...Sg3
- 2.Rxf2#
- 1...Sd6
- 2.Sxd6#
- 1...Sd8
- 2.Sd6#
- 1...c4!
- 1...Qxf1
- 1.Rxc5?
- threat
- 2.Sd4#
- 1...Sxc5
- 2.Sd6#
- 1...bxc5!
- threat
- 1.Rd7?
- 1...Qxf1
- 2.e4#
- 1...e4
- 2.Rd5#
- 1...Sa5
- 2.Sd6#
- 1...Qf3
- 2.Rxf3#
- 2.e4#
- 1...Qf4
- 2.e4#
- 1...Sg3
- 2.Rxf2#
- 1...Sd6
- 2.Sxd6#
- 1...Sd8
- 2.Sd6#
- 1...c4!
- 1...Qxf1
- 1.Rd8?
- 1...Qxf1
- 2.e4#
- 1...Sxd8
- 2.Sd6#
- 1...e4
- 2.Rd5#
- 1...Sa5
- 2.Sd6#
- 1...Qf3
- 2.Rxf3#
- 2.e4#
- 1...Qf4
- 2.e4#
- 1...Sg3
- 2.Rxf2#
- 1...Sd6
- 2.Sxd6#
- 1...c4!
- 1...Qxf1
- 1.Kb1?
- Keys
- 1.Rd2!
- threat
- 2.e4#
- 1...e4
- 2.Rd5#
- 1...Sa5
- 2.Sd6#
- 1...Sg3
- 2.Rxf2#
- 1...Sd6
- 2.Sxd6#
- 1...Sd8
- 2.Sd6#
- threat
- 1.Rd2!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 2
- Sets
- Q(b);N_PINP(C),N_SPINQ(b),XR(A)::P(C)
- S(a);N_GUARD::R(A),XQ(b)
- S(i);N_GUARD::S(E)
- S(i);N_GUARD::S(E),XS(i)
- P(e);N_GUARD::S(E)
- Tries
- Try
- K(B);N_SPINP(C),P-FLIGHT
- Threat
- P(C)
- Vars
- S(a);N_GUARD::R(A),XQ(b)
- S(i);N_GUARD::S(E),XS(i)
- Refutation
- Q(b);CHECK,N_SPINQ(b),XR(A)
- Try
- R(F);N_PINP(f)
- Vars
- Q(b);N_PINP(C),N_SPINQ(b),XR(A)::P(C)
- P(f);OGATEB::R(F)
- S(i);N_GUARD::S(E)
- Q(b);N_PINP(C)::P(C)
- S(a);N_GUARD::R(A),XQ(b)
- S(i);N_GUARD::S(E),XS(i)
- Refutation
- P(e);
- Try
- R(F);N_PINP(f)
- Vars
- Q(b);N_PINP(C),N_SPINQ(b),XR(A)::P(C)
- P(f);OGATEB::R(F)
- S(i);N_GUARD::S(E)
- Q(b);N_PINP(C)::P(C)
- S(a);N_GUARD::R(A),XQ(b)
- S(i);N_GUARD::S(E),XS(i)
- Refutation
- P(e);
- Try
- R(F);XP(e)
- Threat
- S(E)
- Vars
- S(i);N_GUARD,N_SPINP(f),XR(F)::S(E)
- Refutation
- P(h);N_SPINP(f),XR(F)
- Try
- R(F);N_PINP(f)
- Vars
- Q(b);N_PINP(C),N_SPINQ(b),XR(A)::P(C)
- P(f);OGATEB::R(F)
- S(i);N_GUARD::S(E)
- Q(b);N_PINP(C)::P(C)
- S(a);N_GUARD::R(A),XQ(b)
- S(i);N_GUARD::S(E),XS(i)
- Refutation
- P(e);
- Try
- R(F);N_PINP(f)
- Vars
- Q(b);N_PINP(C),N_SPINQ(b),XR(A)::P(C)
- S(i);N_GUARD,XR(F)::S(E)
- P(f);OGATEB::R(F)
- S(i);N_GUARD::S(E)
- Q(b);N_PINP(C)::P(C)
- S(a);N_GUARD::R(A),XQ(b)
- S(i);N_GUARD::S(E),XS(i)
- Refutation
- P(e);
- Try
- Actual
- R(F);N_PINP(f),N_SPINP(C)
- Threat
- P(C)
- Vars
- P(f);OGATEB::R(F)
- S(i);N_GUARD::S(E)
- S(a);N_GUARD::R(A),XQ(b)
- S(i);N_GUARD::S(E),XS(i)
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).