MESON Chess Problem Database
Problem Display
PID: 242673 (2br4/2Kn4/1pRpR3/1PNk1P1N/2rbp3/3n4/Q1B5/5qB1 w - - 0 1)
Hartong, Jan
Tijdschrift vd KNSB, 1941
#2
10 + 11
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Ba1
- 2.Rcxd6#
- 1...Bb2
- 2.Rcxd6#
- 1...Bc3
- 2.Rcxd6#
- 1...Bf6
- 2.Rcxd6#
- 1...Bg7
- 2.Rcxd6#
- 1...Bh8
- 2.Rcxd6#
- 1...Sc1
- 2.Bxe4#
- 1...Se1
- 2.Bxe4#
- 1...Sb2
- 2.Bxe4#
- 1...Sf2
- 2.Sf4#
- 1...Sb4
- 2.Bxe4#
- 1...Sf4
- 2.Bxe4#
- 1...S3xc5
- 2.Rcxd6#
- 1...S3e5
- 2.Bxe4#
- 2.Rexd6#
- 1...S7e5
- 2.Sf6#
- 1...bxc5
- 2.Rcxd6#
- 1...dxc5
- 2.Rcd6#
- 1...Ba1
- Tries
- 1.Sxd3?
- threat
- 2.Sb4#
- 2.Rxd6#
- 2.Qxc4#
- 1...Qxd3
- 2.Sf4#
- 1...Qxf5
- 2.Rxd6#
- 2.Qxc4#
- 1...Bxg1
- 2.Rxd6#
- 2.Qxc4#
- 1...exd3
- 2.Qxc4#
- 1...Bf2
- 2.Rxd6#
- 2.Qxc4#
- 1...Be3
- 2.Rxd6#
- 2.Qxc4#
- 1...Qb1
- 2.Sdf4#
- 2.Shf4#
- 2.Rxd6#
- 2.Qxc4#
- 1...Qe1
- 2.Sdf4#
- 2.Shf4#
- 2.Rxd6#
- 2.Qxc4#
- 1...Qf4
- 2.Sb4#
- 2.Sdxf4#
- 2.Shxf4#
- 2.Qxc4#
- 1...Bc3
- 2.Rxd6#
- 2.Qxc4#
- 1...Be5
- 2.Sb4#
- 2.Qxc4#
- 1...Sc5
- 2.Sb4#
- 1...Se5
- 2.Sb4#
- 2.Sf6#
- 1...Sf6
- 2.Sb4#
- 2.Qxc4#
- 1...Sb8
- 2.Sb4#
- 2.Qxc4#
- 1...Sf8
- 2.Sb4#
- 2.Qxc4#
- 1...e3
- 2.Sb4#
- 2.Qxc4#
- 1...Bc5!
- threat
- 1.Sxd7?
- threat
- 2.Rxd6#
- 2.Qxc4#
- 1...Bxd7
- 2.Qxc4#
- 1...Bc5
- 2.Shf6#
- 2.Sdf6#
- 1...Qf4
- 2.Qxc4#
- 1...Be5
- 2.Sxb6#
- 2.Qxc4#
- 1...Sc1
- 2.Bxe4#
- 2.Rxd6#
- 1...Se1
- 2.Bxe4#
- 2.Rxd6#
- 1...Sb2
- 2.Bxe4#
- 2.Rxd6#
- 1...Sf2
- 2.Sf4#
- 2.Rxd6#
- 1...Sb4
- 2.Bxe4#
- 2.Rxd6#
- 1...Sf4
- 2.Bxe4#
- 2.Rxd6#
- 1...Sc5
- 2.Sxb6#
- 2.Rcxd6#
- 2.Rexd6#
- 1...Se5
- 2.Shf6#
- 2.Sdf6#
- 2.Rxd6#
- 1...e3
- 2.Qxc4#
- 1...Rxd7+!
- threat
- 1.Sf4+?
- 1...Sxf4
- 2.Bxe4#
- 1...Qxf4!
- 1...Sxf4
- 1.Sf6+?
- 1...Bxf6
- 2.Rcxd6#
- 1...Sxf6!
- 1...Bxf6
- 1.Bxd3?
- threat
- 2.Bxe4#
- 2.Qxc4#
- 1...Qxd3
- 2.Sf4#
- 1...Qxf5
- 2.Bxc4#
- 2.Qxc4#
- 1...Bxg1
- 2.Qxc4#
- 1...Sxc5
- 2.Qxc4#
- 1...Bf2
- 2.Qxc4#
- 1...Be3
- 2.Qxc4#
- 1...Qe2
- 2.Sf4#
- 2.Qxc4#
- 1...Qg2
- 2.Sf4#
- 2.Bxc4#
- 2.Qxc4#
- 1...Qb1
- 2.Sf4#
- 2.Bxc4#
- 2.Qxc4#
- 1...Qc1
- 2.Bxe4#
- 1...Qe1
- 2.Sf4#
- 2.Bxc4#
- 2.Qxc4#
- 1...Qf3
- 2.Bxc4#
- 2.Qxc4#
- 1...Qf4
- 2.Sxf4#
- 2.Bxc4#
- 2.Qxc4#
- 1...Se5
- 2.Sf6#
- 2.Bxe4#
- 1...Sf6
- 2.Qxc4#
- 1...e3
- 2.Be4#
- 2.Qxc4#
- 1...exd3!
- threat
- 1.Sxd3?
- Keys
- 1.Sa4!
- threat
- 2.Qxc4#
- 1...Bc5
- 2.Sc3#
- 1...Sc1
- 2.Bxe4#
- 1...Se1
- 2.Bxe4#
- 1...Sb2
- 2.Bxe4#
- 1...Sf2
- 2.Sf4#
- 1...Sb4
- 2.Bxe4#
- 1...Sf4
- 2.Bxe4#
- 1...S3c5
- 2.Rcxd6#
- 1...S3e5
- 2.Rxd6#
- 1...S7c5
- 2.Sxb6#
- 1...S7e5
- 2.Sf6#
- threat
- 1.Sa4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 8
- Sets
- B(d);::R1(H),XP(h)
- S(b);OGATE::B(C),XP(e)
- S(b);N_GUARD,S_CUTQ(a)::S(G)
- S(b);SBLOCK,XS(E)::R1(H),XP(h)
- S(i);N_GUARD,S_CUTB(d)::S(G)
- P(g);SBLOCK,XS(E)::R1(H),XP(h)
- P(h);SBLOCK,XS(E)::R1(H)
- Tries
- Try
- S(E);P_SPINR(H),XS(b)
- Threat
- DUALS(3)
- Vars
- Q(a);N_GUARD,XS(E)::S(G)
- P(e);XS(E)::QAB1(B),XR(c)
- S(i);N_PINR(H)::S(E)
- Refutation
- B(d);N_PINR(H)
- Try
- S(E);P_SPINR(H),XS(i)
- Threat
- DUALS(2)
- Vars
- B(j);XS(E)::QAB1(B),XR(c)
- Q(a);::QAB1(B),XR(c)
- P(e);::QAB1(B),XR(c)
- Refutation
- R(k);CHECK,XS(E)
- Try
- S(G);CHECK
- Vars
- S(b);OGATE,XS(G)::B(C),XP(e)
- Refutation
- Q(a);XS(G)
- Try
- S(G);CHECK
- Vars
- B(d);XS(G)::R1(H),XP(h)
- Refutation
- S(i);XS(G)
- Try
- B(C);XS(b)
- Threat
- DUALS(2)
- Vars
- Q(a);N_GUARD,XB(C)::S(G)
- B(d);XB(A)::QAB1(B),XR(c)
- S(i);XS(E)::QAB1(B),XR(c)
- B(d);::QAB1(B),XR(c)
- Q(a);::B(C),XP(e)
- S(i);::QAB1(B),XR(c)
- Refutation
- P(e);XB(C)
- Try
- Actual
- S(E);P_SPINR(H)
- Threat
- QAB1(B),XR(c)
- Vars
- B(d);N_GUARD,N_PINR(H)::S(E)
- S(b);OGATE::B(C),XP(e)
- S(b);N_GUARD,S_CUTQ(a)::S(G)
- S(b);N_PINR(H)::R1(H),XP(h)
- S(b);SBLOCK::R1(I),XP(h)
- S(i);N_GUARD,N_PINR(H),S_CUTB(d)::S(E),XP(g)
- S(i);N_GUARD,S_CUTB(d)::S(G)
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).