MESON Chess Problem Database
Problem Display
PID: 273298 (4Kn1N/4Q1P1/6Bp/5pR1/3p1P1k/3p4/3Pb1P1/4b1B1 w - - 0 1)
van Koll, AJ
Schakend Nederland, 1968
#2
10 + 8
| 15601 | Albrecht-Leiss-Degener Collection | 2023 |
SOLUTION
- SOUND
- Sets
- 1...Bxd2
- 2.Bf2#
- 1...Bf2
- 2.Bxf2#
- 1...Bd1
- 2.Qxe1#
- 1...Bf1
- 2.Qxe1#
- 1...Bf3
- 2.Qxe1#
- 1...Bg4
- 2.Qxe1#
- 1...Bh5
- 2.Qxe1#
- 1...Sxg6
- 2.Sxg6#
- 1...hxg5
- 2.Qxg5#
- 1...Bxd2
- Tries
- 1.Bxf5?
- 1...Bh5+
- 2.Rg6#
- 1...Bxd2
- 2.Bf2#
- 2.g3#
- 1...hxg5
- 2.Qxg5#
- 1...Bg4
- 2.Qxe1#
- 1...Bf2
- 2.Bxf2#
- 1...Bd1
- 2.Qxe1#
- 1...Bf1
- 2.Qxe1#
- 1...Bf3
- 2.Qxe1#
- 1...Se6
- 2.Sg6#
- 1...Sg6
- 2.Sxg6#
- 1...Sd7
- 2.Sg6#
- 1...Sh7
- 2.Sg6#
- 1...h5
- 2.Rg4#
- 2.Rg6#
- 1...Bg3!
- 1...Bh5+
- 1.Bf7?
- 1...Bxd2
- 2.Bf2#
- 1...hxg5
- 2.Qxg5#
- 1...Bg4
- 2.Qxe1#
- 1...Bf2
- 2.Bxf2#
- 1...Bd1
- 2.Qxe1#
- 1...Bf1
- 2.Qxe1#
- 1...Bf3
- 2.Qxe1#
- 1...Bh5
- 2.Rg6#
- 2.Qxe1#
- 1...Se6
- 2.Sg6#
- 1...Sg6
- 2.Sxg6#
- 1...Sd7
- 2.Sg6#
- 1...Sh7
- 2.Sg6#
- 1...h5
- 2.Rg6#
- 1...Bg3!
- 1...Bxd2
- 1.Bh7?
- 1...Bh5+
- 2.Rg6#
- 1...Bxd2
- 2.Bf2#
- 1...Sxh7
- 2.Sg6#
- 1...hxg5
- 2.Qxg5#
- 1...Bg4
- 2.Qxe1#
- 1...Bf2
- 2.Bxf2#
- 1...Bd1
- 2.Qxe1#
- 1...Bf1
- 2.Qxe1#
- 1...Bf3
- 2.Qxe1#
- 1...Se6
- 2.Sg6#
- 1...Sg6
- 2.Sxg6#
- 1...Sd7
- 2.Sg6#
- 1...h5
- 2.Rg6#
- 1...Bg3!
- 1...Bh5+
- 1.Qe3?
- threat
- 2.Qh3#
- 1...Bg3
- 2.Qxg3#
- 1...Bf3
- 2.Qxe1#
- 1...Bg4
- 2.Qxe1#
- 1...dxe3!
- threat
- 1.Bxf5?
- Keys
- 1.Bh5!
- 1...Bxh5+
- 2.Rg6#
- 1...Bxd2
- 2.Bf2#
- 1...hxg5
- 2.Qxg5#
- 1...Bg4
- 2.Qxe1#
- 1...Bg3
- 2.Rxf5#
- 1...Bf2
- 2.Bxf2#
- 1...Bd1
- 2.Qxe1#
- 1...Bf1
- 2.Qxe1#
- 1...Bf3
- 2.Qxe1#
- 1...Se6
- 2.Sg6#
- 1...Sg6
- 2.Sxg6#
- 1...Sd7
- 2.Sg6#
- 1...Sh7
- 2.Sg6#
- 1...Bxh5+
- 1.Bh5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- B(a);N_GUARD,XP(B)::B(A)
- B(a);N_GUARD::B(A),XB(a)
- B(b);OGATE::QAB(G),XB(a)
- B(b);OGATE,P_PINB(F)::QAB(G),XB(a)
- S(h);XB(F)::S(J),XS(h)
- P(g);OGATE,P_SPINP(g),XR(E)::QAB1(G),XP(g)
- Tries
- Try
- B(F);XP(f)
- Vars
- B(b);CHECK,SBLOCK::QAB(G)+R(E)
- P(g);OGATE,P_SPINP(g),XR(E)::QAB1(G),XP(g)
- B(b);OGATE::QAB(G),XB(a)
- B(a);N_GUARD::B(A),XB(a)
- S(h);N_GUARD::S(J)
- S(h);N_GUARD::S(J),XS(h)
- Refutation
- B(a);
- Try
- B(F);
- Vars
- B(a);N_GUARD,XP(B)::B(A)
- P(g);OGATE,P_SPINP(g),XR(E)::QAB1(G),XP(g)
- B(b);OGATE::QAB(G),XB(a)
- B(a);N_GUARD::B(A),XB(a)
- S(h);N_GUARD::S(J)
- S(h);N_GUARD::S(J),XS(h)
- P(g);SBLOCK::QAB(G)+R(E)
- Refutation
- B(a);
- Try
- B(F);
- Vars
- B(b);CHECK,SBLOCK::QAB(G)+R(E)
- B(a);N_GUARD,XP(B)::B(A)
- S(h);N_GUARD,XB(F)::S(J)
- P(g);OGATE,P_SPINP(g),XR(E)::QAB1(G),XP(g)
- B(b);OGATE::QAB(G),XB(a)
- B(a);N_GUARD::B(A),XB(a)
- S(h);N_GUARD::S(J)
- S(h);N_GUARD::S(J),XS(h)
- P(g);SBLOCK::QAB(G)+R(E)
- Refutation
- B(a);
- Try
- Q(G);
- Threat
- QAR1(G)
- Vars
- B(a);N_GUARD::QAB1(G),XB(a)
- B(b);OGATE::QAB(G),XB(a)
- Refutation
- P(d);XQ(G)
- Try
- Actual
- B(F);
- Vars
- B(b);CHECK,SBLOCK,XB(F)::QAB(G)+R(E)
- B(a);N_GUARD,XP(B)::B(A)
- P(g);OGATE,P_SPINP(g),XR(E)::QAB1(G),XP(g)
- B(b);OGATE::QAB(G),XB(a)
- B(a);SBLOCK::QAB(G)+R(E),XP(f)
- B(a);N_GUARD::B(A),XB(a)
- S(h);N_GUARD::S(J)
- S(h);N_GUARD::S(J),XS(h)
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).