MESON Chess Problem Database
Problem Display
PID: 145724 (1N2b3/4p3/1p2pp2/bp2k1p1/pP4R1/2K1pP2/4P1n1/BBQR4 w - - 0 1)
Reddmann, Hauke
Sp. Prize, Problem-Forum, 2008
#2
10 + 12
| 23 | Die Schwalbe | 2011 |
| 133 | The Problemist Supplement | 2013 |
SOLUTION
- SOUND
- Sets
- 1...Bxb4+
- 2.Kxb4#
- 1...Bh5
- 2.Sc6#
- 2.Sd7#
- 1...Bc6
- 2.Sxc6#
- 1...Bg6
- 2.Sc6#
- 2.Sd7#
- 1...Bd7
- 2.Sxd7#
- 1...Bf7
- 2.Sc6#
- 2.Sd7#
- 1...Se1
- 2.Qxe3#
- 1...Sf4
- 2.Qxe3#
- 1...Sh4
- 2.Qxe3#
- 1...a3
- 2.Kb3#
- 1...f5
- 2.Kc2#
- 1...Bxb4+
- Tries
- 1.Kb2?
- threat
- 2.Ka2#
- 2.Ka3#
- 2.Qc3#
- 2.Qc7#
- 1...a3+
- 2.Ka2#
- 2.Kxa3#
- 2.Kb3#
- 1...f5
- 2.Ka2#
- 2.Kc2#
- 2.Ka3#
- 2.Qc3#
- 1...Bc6
- 2.Ka2#
- 2.Ka3#
- 2.Sxc6#
- 2.Qc3#
- 1...Bxb4!
- threat
- 1.Bb2?
- 1...Bxb4+
- 2.Kxb4#
- 1...f5
- 2.Kc2#
- 1...Bh5
- 2.Sc6#
- 2.Sd7#
- 1...Bc6
- 2.Sxc6#
- 1...Bg6
- 2.Sc6#
- 2.Sd7#
- 1...Bd7
- 2.Sxd7#
- 1...Bf7
- 2.Sc6#
- 2.Sd7#
- 1...Se1
- 2.Qxe3#
- 1...Sf4
- 2.Qxe3#
- 1...Sh4
- 2.Qxe3#
- 1...a3!
- 1...Bxb4+
- 1.Bc2?
- 1...Bxb4+
- 2.Kxb4#
- 1...Bh5
- 2.Sc6#
- 2.Sd7#
- 1...Bc6
- 2.Sxc6#
- 1...Bg6
- 2.Sc6#
- 2.Sd7#
- 1...Bd7
- 2.Sxd7#
- 1...Bf7
- 2.Sc6#
- 2.Sd7#
- 1...Se1
- 2.Qxe3#
- 1...Sf4
- 2.Qxe3#
- 1...Sh4
- 2.Qxe3#
- 1...a3
- 2.Kb3#
- 1...f5!
- 1...Bxb4+
- 1.Be4?
- threat
- 2.Kc2#
- 1...Bxb4+
- 2.Kxb4#
- 1...Se1!
- threat
- 1.Bg6?
- threat
- 2.Kc2#
- 2.Re4#
- 1...Bxb4+
- 2.Kxb4#
- 1...f5
- 2.Kc2#
- 1...Bc6
- 2.Kc2#
- 2.Sxc6#
- 1...Se1
- 2.Re4#
- 2.Qxe3#
- 1...Sf4
- 2.Kc2#
- 2.Qxe3#
- 1...Bxg6!
- threat
- 1.Bh7?
- threat
- 2.Kc2#
- 2.Re4#
- 1...Bxb4+
- 2.Kxb4#
- 1...f5
- 2.Kc2#
- 1...Bc6
- 2.Kc2#
- 2.Sxc6#
- 1...Se1
- 2.Re4#
- 2.Qxe3#
- 1...Sf4
- 2.Kc2#
- 2.Qxe3#
- 1...Bg6!
- threat
- 1.Rd7?
- threat
- 2.Sc6#
- 1...Bxb4+
- 2.Kxb4#
- 1...f5
- 2.Kc2#
- 2.Kd3#
- 1...Bxd7!
- threat
- 1.Rd8?
- 1...Bxb4+
- 2.Kxb4#
- 1...f5
- 2.Kc2#
- 2.Kd3#
- 1...Se1
- 2.Qxe3#
- 1...Bh5
- 2.Sc6#
- 1...Bc6
- 2.Sxc6#
- 1...Bg6
- 2.Sc6#
- 1...Bf7
- 2.Sc6#
- 1...Sf4
- 2.Qxe3#
- 1...Sh4
- 2.Qxe3#
- 1...a3
- 2.Kb3#
- 1...Bd7!
- 1...Bxb4+
- 1.Qd2?
- threat
- 2.Qd4#
- 1...Bxb4+
- 2.Kxb4#
- 1...exd2!
- threat
- 1.Qc2?
- threat
- 2.Qe4#
- 1...Bxb4+
- 2.Kxb4#
- 1...Bc6
- 2.Sxc6#
- 1...Bg6
- 2.Sc6#
- 2.Sd7#
- 1...f5!
- threat
- 1.f4+?
- 1...Sxf4
- 2.Qxe3#
- 1...gxf4!
- 1...Sxf4
- 1.bxa5?
- threat
- 2.Kb4#
- 1...b4+
- 2.Kxb4#
- 2.Kc4#
- 1...bxa5!
- threat
- 1.Kb2?
- Keys
- 1.Kd3+!
- 1...Kd5
- 2.Kc2#
- 1...Kf5
- 2.Kd4#
- 1...Kd6
- 2.Ke4#
- 1...Kd5
- 1.Kd3+!
FEATURES
- Static
- TYPE = CHECKING_KEY
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 8
- Sets
- B(d);CHECK,XP(H)::B(A)+K(F),XB(d)
- B(l);N_GUARD::S(J),XB(l)
- S(a);N_GUARD::QAR2(C),XP(b)
- P(c);::B(A)+K(F)
- P(j);SBLOCK::B(A)+K(F)
- Tries
- Try
- K(F);N_SPINP(H),S_FLIGHT
- Threat
- DUALS(4)
- Refutation
- B(d);XP(H)
- Try
- B(A);
- Vars
- B(d);CHECK,XP(H)::B(A)+K(F),XB(d)
- P(j);SBLOCK::B(A)+K(F)
- B(l);N_GUARD::S(J),XB(l)
- S(a);N_GUARD::QAR2(C),XP(b)
- Refutation
- P(c);
- Try
- B(B);
- Vars
- B(d);CHECK,XP(H)::B(A)+K(F),XB(d)
- B(l);N_GUARD::S(J),XB(l)
- S(a);N_GUARD::QAR2(C),XP(b)
- P(c);::B(A)+K(F)
- Refutation
- P(j);
- Try
- B(B);
- Threat
- B(A)+K(F)
- Vars
- B(d);CHECK,XP(H)::B(A)+K(F),XB(d)
- Refutation
- S(a);
- Try
- B(B);
- Threat
- DUALS(2)
- Vars
- B(d);CHECK,XP(H)::B(A)+K(F),XB(d)
- P(j);::B(A)+K(F)
- Refutation
- B(l);XB(B)
- Try
- B(B);
- Threat
- DUALS(2)
- Vars
- B(d);CHECK,XP(H)::B(A)+K(F),XB(d)
- P(j);::B(A)+K(F)
- Refutation
- B(l);
- Try
- R(D);
- Threat
- S(J)
- Vars
- B(d);CHECK,XP(H)::B(A)+K(F),XB(d)
- Refutation
- B(l);XR(D)
- Try
- R(D);
- Vars
- B(d);CHECK,XP(H)::B(A)+K(F),XB(d)
- S(a);N_GUARD::QAR2(C),XP(b)
- B(l);N_GUARD::S(J)
- B(l);N_GUARD::S(J),XB(l)
- P(c);::B(A)+K(F)
- Refutation
- B(l);
- Try
- Q(C);
- Threat
- QAB1(C)
- Vars
- B(d);CHECK,XP(H)::B(A)+K(F),XB(d)
- Refutation
- P(b);XQ(C)
- Try
- Q(C);
- Threat
- QAR1(C)
- Vars
- B(d);CHECK,XP(H)::B(A)+K(F),XB(d)
- B(l);N_GUARD::S(J),XB(l)
- Refutation
- P(j);
- Try
- P(G);CHECK
- Vars
- S(a);XP(G)::QAR2(C),XP(b)
- Refutation
- P(g);XP(G)
- Try
- P(H);N_SPINP(H),XB(d)
- Threat
- B(A)+K(F)
- Refutation
- P(h);XP(H)
- Try
- Actual
- K(F);CHECK,N_SPINP(H),P-FLIGHT
- Vars
- K(f);P-FLIGHT::R(D)+K(F)
- K(f);P-FLIGHT::B(B)+K(F)
- K(f);S_FLIGHT::R(D)+K(F)
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).