MESON Chess Problem Database
Problem Display
PID: 17879 (8/4pNRb/2Q5/5k2/7b/3K4/2p5/2B5 w - - 0 1)
Hartong, Jan
3rd Prize, Probleemblad, 1951
#2
5 + 5
| 3105 | FIDE Album (1945-1955) | 1964 |
| 3310 | 2345 Chess Problems | 1997 |
SOLUTION
- SOUND
- Sets
- 1...Be1
- 2.Rg5#
- 1...Bf2
- 2.Rg5#
- 1...Bg3
- 2.Rg5#
- 1...Bg5
- 2.Rxg5#
- 1...Bf6
- 2.Qe4#
- 1...Bg6
- 2.Qxg6#
- 1...Bg8
- 2.Qg6#
- 1...e5
- 2.Sh6#
- 1...e6
- 2.Qf3#
- 1...Be1
- Tries
- 1.Kxc2?
- 1...Bg5
- 2.Rxg5#
- 1...Bg6
- 2.Qxg6#
- 1...e6
- 2.Qf3#
- 1...Be1
- 2.Rg5#
- 1...Bf2
- 2.Rg5#
- 1...Bg3
- 2.Rg5#
- 1...Bg8
- 2.Qg6#
- 1...e5
- 2.Sh6#
- 1...Bf6!
- 1...Bg5
- 1.Ke2?
- 1...Bg5
- 2.Rxg5#
- 1...Bg6
- 2.Qxg6#
- 1...e6
- 2.Qf3#
- 1...Be1
- 2.Rg5#
- 1...Bf2
- 2.Rg5#
- 1...Bg3
- 2.Rg5#
- 1...Bg8
- 2.Qg6#
- 1...e5
- 2.Sh6#
- 1...Bf6!
- 1...Bg5
- 1.Ke3?
- 1...Bg5+
- 2.Rxg5#
- 1...Bg6
- 2.Qxg6#
- 1...e6
- 2.Qf3#
- 1...Bf6
- 2.Qe4#
- 1...Be1
- 2.Rg5#
- 1...Bg3
- 2.Rg5#
- 1...Bg8
- 2.Qg6#
- 1...e5
- 2.Sh6#
- 1...Bf2+!
- 1...Bg5+
- 1.Kc4?
- 1...Bg5
- 2.Rxg5#
- 1...Bg6
- 2.Qxg6#
- 1...e6
- 2.Qf3#
- 1...Be1
- 2.Rg5#
- 1...Bf2
- 2.Rg5#
- 1...Bg3
- 2.Rg5#
- 1...Bg8
- 2.Qg6#
- 1...e5
- 2.Sh6#
- 1...Bf6!
- 1...Bg5
- 1.Rg1?
- 1...e6
- 2.Qf3#
- 1...Bf6
- 2.Qe4#
- 1...Be1
- 2.Rg5#
- 1...Bf2
- 2.Rg5#
- 1...Bg5
- 2.Rxg5#
- 1...Bg6
- 2.Qxg6#
- 1...Bg8
- 2.Qg6#
- 1...e5
- 2.Sh6#
- 1...Bg3!
- 1...e6
- 1.Rg2?
- 1...e6
- 2.Qf3#
- 1...Bf6
- 2.Qe4#
- 1...Be1
- 2.Rg5#
- 1...Bf2
- 2.Rg5#
- 1...Bg5
- 2.Rxg5#
- 1...Bg6
- 2.Qxg6#
- 1...Bg8
- 2.Qg6#
- 1...e5
- 2.Sh6#
- 1...Bg3!
- 1...e6
- 1.Rg3?
- 1...e6
- 2.Qf3#
- 1...Bf6
- 2.Qe4#
- 1...Bg5
- 2.Rxg5#
- 1...Bg6
- 2.Qxg6#
- 1...Bg8
- 2.Qg6#
- 1...e5
- 2.Sh6#
- 1...Bxg3!
- 1...e6
- 1.Rg4?
- threat
- 2.Rf4#
- 1...e6
- 2.Qf3#
- 1...Bf6
- 2.Qe4#
- 1...Bg3
- 2.Rg5#
- 1...Bg5
- 2.Rxg5#
- 1...e5
- 2.Sh6#
- 1...Kxg4+!
- threat
- 1.Rg6?
- threat
- 2.Qe4#
- 2.Qe6#
- 1...Bf6
- 2.Qe4#
- 1...e6
- 2.Qe4#
- 2.Qxe6#
- 1...Bxg6!
- threat
- 1.Rg8?
- 1...Bg5
- 2.Rxg5#
- 1...Bg6
- 2.Qxg6#
- 1...e6
- 2.Qf3#
- 1...Bf6
- 2.Qe4#
- 1...Be1
- 2.Rg5#
- 1...Bf2
- 2.Rg5#
- 1...Bg3
- 2.Rg5#
- 1...e5
- 2.Sh6#
- 1...Bxg8!
- 1...Bg5
- 1.Qd5+?
- 1...e5
- 2.Qxe5#
- 1...Kf6+!
- 1...e5
- 1.Qd6?
- threat
- 2.Sh6#
- 2.Qe5#
- 1...Bg5
- 2.Rxg5#
- 1...Bg6
- 2.Sh6#
- 2.Qxg6#
- 1...e6
- 2.Qf4#
- 2.Qe5#
- 1...Bf6
- 2.Sh6#
- 1...Bg3
- 2.Sh6#
- 2.Rg5#
- 1...e5
- 2.Sh6#
- 2.Qxe5#
- 1...exd6!
- threat
- 1.Kxc2?
- Keys
- 1.Qh6!
- 1...Bg5
- 2.Rxg5#
- 1...Bf6
- 2.Qh3#
- 1...Bg6
- 2.Qxg6#
- 1...Be1
- 2.Rg5#
- 1...Bf2
- 2.Rg5#
- 1...Bg3
- 2.Rg5#
- 1...Bg8
- 2.Qg6#
- 1...e5
- 2.Sd6#
- 1...e6
- 2.Qf4#
- 1...Bg5
- 1.Qh6!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 3
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- B(b);N_GUARD::R1(E)
- B(b);N_GUARD::R1(E),XB(b)
- B(b);SBLOCK::QAB1(C)
- B(e);N_GUARD::QAB1(C),XB(e)
- B(e);N_GUARD::QAB1(C)
- P(d);SBLOCK::S(D)
- P(d);SBLOCK::QAR2(C)
- Tries
- Try
- K(B);S_FLIGHT,XP(a)
- Vars
- B(b);N_GUARD::R1(E),XB(b)
- B(e);N_GUARD::QAB1(C),XB(e)
- P(d);SBLOCK::QAR2(C)
- B(b);N_GUARD::R1(E)
- B(e);N_GUARD::QAB1(C)
- P(d);SBLOCK::S(D)
- Refutation
- B(b);
- Try
- K(B);S_FLIGHT
- Vars
- B(b);N_GUARD::R1(E),XB(b)
- B(e);N_GUARD::QAB1(C),XB(e)
- P(d);SBLOCK::QAR2(C)
- B(b);N_GUARD::R1(E)
- B(e);N_GUARD::QAB1(C)
- P(d);SBLOCK::S(D)
- Refutation
- B(b);
- Try
- K(B);P-FLIGHT
- Vars
- B(b);CHECK,N_GUARD::R1(E),XB(b)
- B(e);N_GUARD::QAB1(C),XB(e)
- P(d);SBLOCK::QAR2(C)
- B(b);SBLOCK::QAB1(C)
- B(b);N_GUARD::R1(E)
- B(e);N_GUARD::QAB1(C)
- P(d);SBLOCK::S(D)
- Refutation
- B(b);CHECK
- Try
- K(B);S_FLIGHT
- Vars
- B(b);N_GUARD::R1(E),XB(b)
- B(e);N_GUARD::QAB1(C),XB(e)
- P(d);SBLOCK::QAR2(C)
- B(b);N_GUARD::R1(E)
- B(e);N_GUARD,P_PINS(D)::QAB1(C)
- P(d);SBLOCK::S(D)
- Refutation
- B(b);
- Try
- R(E);
- Vars
- P(d);SBLOCK::QAR2(C)
- B(b);SBLOCK::QAB1(C)
- B(b);N_GUARD::R1(E)
- B(b);N_GUARD::R1(E),XB(b)
- B(e);N_GUARD::QAB1(C),XB(e)
- B(e);N_GUARD::QAB1(C)
- P(d);SBLOCK::S(D)
- Refutation
- B(b);
- Try
- R(E);
- Vars
- P(d);SBLOCK::QAR2(C)
- B(b);SBLOCK::QAB1(C)
- B(b);N_GUARD::R1(E)
- B(b);N_GUARD::R1(E),XB(b)
- B(e);N_GUARD::QAB1(C),XB(e)
- B(e);N_GUARD::QAB1(C)
- P(d);SBLOCK::S(D)
- Refutation
- B(b);
- Try
- R(E);
- Vars
- P(d);SBLOCK::QAR2(C)
- B(b);SBLOCK::QAB1(C)
- B(b);N_GUARD::R1(E),XB(b)
- B(e);N_GUARD::QAB1(C),XB(e)
- B(e);N_GUARD::QAB1(C)
- P(d);SBLOCK::S(D)
- Refutation
- B(b);XR(E)
- Try
- R(E);
- Threat
- R1(E)
- Vars
- P(d);SBLOCK::QAR2(C)
- B(b);SBLOCK::QAB1(C)
- B(b);N_GUARD::R1(E)
- B(b);N_GUARD::R1(E),XB(b)
- P(d);SBLOCK::S(D)
- Refutation
- K(c);CHECK,S_FLIGHT,XR(E)
- Try
- R(E);
- Threat
- DUALS(2)
- Vars
- B(b);::QAB1(C)
- Refutation
- B(e);XR(E)
- Try
- R(E);
- Vars
- B(b);N_GUARD::R1(E),XB(b)
- B(e);N_GUARD::QAB1(C),XB(e)
- P(d);SBLOCK::QAR2(C)
- B(b);SBLOCK::QAB1(C)
- B(b);N_GUARD::R1(E)
- P(d);SBLOCK::S(D)
- Refutation
- B(e);XR(E)
- Try
- Q(C);CHECK
- Vars
- P(d);P_SPINP(d)::QAR1(C),XP(d)
- Refutation
- K(c);CHECK,P-FLIGHT
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- B(b);N_GUARD::R1(E),XB(b)
- B(b);::S(D)
- Refutation
- P(d);XQ(C)
- Try
- Actual
- Q(C);
- Vars
- B(b);N_GUARD::R1(E),XB(b)
- B(b);OGATE,SBLOCK::QAB(C)
- B(e);N_GUARD::QAB1(C),XB(e)
- B(b);N_GUARD::R1(E)
- B(e);N_GUARD::QAB1(C)
- P(d);N_GUARD,SBLOCK::S(D)
- P(d);SBLOCK::QAR1(C)
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).