MESON Chess Problem Database
Problem Display
PID: 242690 (2N3K1/2B1R1p1/R7/1r3kPb/5N1p/b2P3P/8/1B4Q1 w - - 0 1)
Hartong, Jan
Problemas, 1951
#2
11 + 6
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rb4
- 2.Qc5#
- 1...Ra5
- 2.d4#
- 1...Rd5
- 2.d4#
- 1...Bb2
- 2.d4#
- 1...Bb4
- 2.d4#
- 1...Bxe7
- 2.Sxe7#
- 1...Bd1
- 2.Rf7#
- 1...Be2
- 2.Rf7#
- 1...Bf3
- 2.Rf7#
- 1...Bg4
- 2.Qxg4#
- 1...Bg6
- 2.Qg4#
- 1...Bf7+
- 2.Rxf7#
- 1...Be8
- 2.Qg4#
- 1...g6
- 2.Rf6#
- 2.Rf7#
- 1...Rb4
- Tries
- 1.Sg6?
- threat
- 2.Sxh4#
- 2.Rf7#
- 1...Bxe7
- 2.Sxh4#
- 2.Sgxe7#
- 2.Scxe7#
- 1...Bxg6
- 2.Qg4#
- 1...Rb6
- 2.Sxh4#
- 1...Bg4
- 2.Qxg4#
- 1...Rb4
- 2.Re5#
- 2.Rf7#
- 2.Qc5#
- 1...Re5
- 2.Rxe5#
- 2.Rf7#
- 1...Bb2
- 2.Sxh4#
- 2.d4#
- 1...Bd6!
- threat
- 1.Sd6+?
- 1...Kxf4
- 2.Qe3#
- 1...Bxd6!
- 1...Kxf4
- 1.Rxa3?
- 1...Bf7+
- 2.Rxf7#
- 1...Rxb1
- 2.Qc5#
- 1...Bg4
- 2.Qxg4#
- 1...Rb2
- 2.Qc5#
- 1...Rb3
- 2.Qc5#
- 1...Rb4
- 2.Qc5#
- 1...Ra5
- 2.Rxa5#
- 2.d4#
- 1...Rc5
- 2.Qxc5#
- 1...Rd5
- 2.d4#
- 1...Rb6
- 2.Qc5#
- 1...Rb7
- 2.Qc5#
- 1...Rb8
- 2.Qc5#
- 1...Bd1
- 2.Rf7#
- 1...Be2
- 2.Rf7#
- 1...Bf3
- 2.Rf7#
- 1...Bg6
- 2.Qg4#
- 1...Be8
- 2.Qg4#
- 1...g6
- 2.Rf7#
- 1...Re5!
- 1...Bf7+
- 1.Re5+?
- 1...Kxf4
- 2.Qe3#
- 1...Rxe5!
- 1...Kxf4
- 1.Qg3?
- 1...Bf7+
- 2.Rxf7#
- 1...Rxb1
- 2.Re5#
- 1...Bxe7
- 2.Sxe7#
- 1...Bg4
- 2.Qxg4#
- 1...Rb6
- 2.Re5#
- 1...Rb2
- 2.Re5#
- 1...Rb3
- 2.Re5#
- 1...Rb4
- 2.Sd6#
- 2.Re5#
- 1...Ra5
- 2.d4#
- 1...Rc5
- 2.Sd6#
- 1...Rd5
- 2.d4#
- 1...Re5
- 2.Rxe5#
- 1...Rb7
- 2.Re5#
- 1...Rb8
- 2.Re5#
- 1...Bc1
- 2.Sd6#
- 1...Bb2
- 2.Sd6#
- 2.d4#
- 1...Bb4
- 2.d4#
- 1...Bc5
- 2.Re5#
- 1...Bd6
- 2.Sxd6#
- 1...Bd1
- 2.Rf7#
- 1...Be2
- 2.Rf7#
- 1...Bf3
- 2.Rf7#
- 1...Bg6
- 2.Qg4#
- 1...Be8
- 2.Qg4#
- 1...g6
- 2.Rf6#
- 2.Rf7#
- 1...hxg3!
- 1...Bf7+
- 1.Sg6?
- Keys
- 1.Ra4!
- 1...Bf7+
- 2.Rxf7#
- 1...Rxb1
- 2.Re5#
- 1...Bxe7
- 2.Sxe7#
- 1...Bg4
- 2.Qxg4#
- 1...Rb2
- 2.Re5#
- 1...Rb3
- 2.Re5#
- 1...Rb4
- 2.Qc5#
- 1...Ra5
- 2.d4#
- 1...Rc5
- 2.Sd6#
- 1...Rd5
- 2.d4#
- 1...Re5
- 2.Rxe5#
- 1...Rb6
- 2.Re5#
- 1...Rb7
- 2.Re5#
- 1...Rb8
- 2.Re5#
- 1...Bc1
- 2.Sd6#
- 1...Bb2
- 2.Sd6#
- 2.d4#
- 1...Bb4
- 2.d4#
- 1...Bc5
- 2.Re5#
- 1...Bd6
- 2.Sxd6#
- 1...Bd1
- 2.Rf7#
- 1...Be2
- 2.Rf7#
- 1...Bf3
- 2.Rf7#
- 1...Bg6
- 2.Qg4#
- 1...Be8
- 2.Qg4#
- 1...g6
- 2.Rf7#
- 1...Bf7+
- 1.Ra4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 12
- REMOVED MATES = 1
- Sets
- R(c);N_GUARD,S_CUTB(a)::QAR(B)
- R(c);N_GUARD::B(A)+P(C)
- B(a);S_CUTR(c)::B(A)+P(C)
- B(a);XR(I)::S(J),XB(a)
- B(e);N_GUARD::R(I)
- B(e);N_GUARD::QAB1(B),XB(e)
- B(e);N_GUARD::QAB1(B)
- B(e);CHECK,N_GUARD::R(I),XB(e)
- Tries
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- B(e);N_GUARD,XS(E)::QAB1(B)
- R(c);::S(E),XP(b)
- B(e);N_GUARD::QAB1(B),XB(e)
- Refutation
- B(a);
- Try
- S(J);CHECK
- Vars
- K(d);P-FLIGHT,XS(E)::QAB1(B)
- Refutation
- B(a);XS(J)
- Try
- R(G);XB(a)
- Vars
- B(e);CHECK,N_GUARD::R(I),XB(e)
- R(c);N_GUARD,XB(A)::QAR(B)
- B(e);N_GUARD::QAB1(B),XB(e)
- R(c);N_GUARD::QAR(B)
- R(c);N_GUARD::QAR(B),XR(c)
- R(c);N_GUARD::B(A)+P(C)
- R(c);N_GUARD,P_PINS(J)::QAR(B)
- B(e);N_GUARD::R(I)
- B(e);N_GUARD::QAB1(B)
- P(f);S_CUTB(e)::R(I)
- Refutation
- R(c);
- Try
- R(I);CHECK
- Vars
- K(d);P-FLIGHT,XS(E)::QAB1(B)
- Refutation
- R(c);XR(I)
- Try
- Q(B);
- Vars
- B(e);CHECK,N_GUARD::R(I),XB(e)
- R(c);N_GUARD,XB(A)::R1(I)
- B(a);XR(I)::S(J),XB(a)
- B(e);N_GUARD::QAB1(B),XB(e)
- R(c);N_GUARD::R1(I)
- R(c);N_GUARD::B(A)+P(C)
- R(c);S_CUTB(a)::S(J)
- R(c);N_GUARD::R1(I),XR(c)
- R(c);N_GUARD,P_PINS(J)::R1(I)
- B(a);N_GUARD::S(J)
- B(a);S_CUTR(c)::B(A)+P(C)
- B(a);S_CUTR(c)::R1(I)
- B(a);N_GUARD::S(J),XB(a)
- B(e);N_GUARD::R(I)
- B(e);N_GUARD::QAB1(B)
- Refutation
- P(b);XQ(B)
- Try
- Actual
- R(G);
- Vars
- B(e);CHECK,N_GUARD::R(I),XB(e)
- R(c);N_GUARD,XB(A)::R1(I)
- B(a);XR(I)::S(J),XB(a)
- B(e);N_GUARD::QAB1(B),XB(e)
- R(c);N_GUARD::R1(I)
- R(c);N_GUARD,S_CUTB(a)::QAR(B)
- R(c);N_GUARD::B(A)+P(C)
- R(c);S_CUTB(a)::S(J)
- R(c);N_GUARD::R1(I),XR(c)
- R(c);N_GUARD,P_PINS(J)::R1(I)
- B(a);N_GUARD::S(J)
- B(a);S_CUTR(c)::B(A)+P(C)
- B(a);S_CUTR(c)::R1(I)
- B(a);N_GUARD::S(J),XB(a)
- B(e);N_GUARD::R(I)
- B(e);N_GUARD::QAB1(B)
- P(f);S_CUTB(e)::R(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).