MESON Chess Problem Database
Problem Display
PID: 239641 (B4B1Q/3R3r/3Np2r/Ppk4p/b2b2R1/Pn2pN2/8/4K3 w - - 0 1)
Maleika, Gerhard
Candela MT (Problemas), 2018
#2
10 + 10
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rxh8
- 2.Rc7#
- 1...Ba1
- 2.Sf7#
- 1...Bb2
- 2.Sf7#
- 1...Bc3+
- 2.Qxc3#
- 1...Be5
- 2.Qxe5#
- 1...Bg7
- 2.Rc7#
- 1...Bxh8
- 2.Sf7#
- 1...Sa1
- 2.Qxd4#
- 1...Sc1
- 2.Qxd4#
- 1...Sd2
- 2.Qxd4#
- 1...Sxa5
- 2.Qxd4#
- 1...Rxh8
- Tries
- 1.Sd2?
- threat
- 2.S2e4#
- 2.S6e4#
- 2.Sf7#
- 1...Rxd7
- 2.S2e4#
- 2.S6e4#
- 1...Rxh8
- 2.S2e4#
- 2.S6e4#
- 2.Rc7#
- 1...Bxh8
- 2.S6e4#
- 2.Sf7#
- 1...Sxd2
- 2.Qxd4#
- 1...Sxa5
- 2.Qxd4#
- 1...Re7
- 2.S2e4#
- 2.S6e4#
- 1...Rf7
- 2.S2e4#
- 2.S6e4#
- 2.Sxf7#
- 1...Bc3
- 2.Se4#
- 2.Sf7#
- 2.Qxc3#
- 1...Be5
- 2.S6e4#
- 2.Qxe5#
- 1...Bf6
- 2.S6e4#
- 1...Bg7
- 2.S6e4#
- 2.Rc7#
- 1...b4
- 2.S2e4#
- 1...e5
- 2.S2e4#
- 2.S6e4#
- 1...exd2+!
- threat
- 1.Sc4+?
- 1...Re7
- 2.Rc7#
- 1...Kxc4!
- 1...Re7
- 1.Sf5+?
- 1...Re7
- 2.Rc7#
- 1...Kc4!
- 1...Re7
- 1.Sb7+?
- 1...Kc6
- 2.Sc5#
- 1...Kc4!
- 1...Kc6
- 1.Sc8+?
- 1...Re7
- 2.Rc7#
- 1...Kc4!
- 1...Re7
- 1.Se8+?
- 1...Re7
- 2.Rc7#
- 1...Kc4!
- 1...Re7
- 1.Be7?
- threat
- 2.Rc7#
- 2.Qc8#
- 1...Bc3+
- 2.Qxc3#
- 1...Rxe7
- 2.Qc8#
- 1...Rxh8
- 2.Rc7#
- 1...Bxh8
- 2.Sf7#
- 2.Rc7#
- 1...Sxa5
- 2.Qxd4#
- 1...b4!
- threat
- 1.Rxd4?
- threat
- 2.Se4#
- 2.Sf7#
- 2.Qe5#
- 1...Rxd7
- 2.Se4#
- 2.Qe5#
- 1...Rxh8
- 2.Se4#
- 2.Rc7#
- 1...Sxd4
- 2.Qxd4#
- 2.Qe5#
- 1...Rf6
- 2.Se4#
- 2.Sf7#
- 1...Re7
- 2.Se4#
- 2.Qe5#
- 1...Rf7
- 2.Se4#
- 2.Sxf7#
- 2.Qe5#
- 1...Rg7
- 2.Se4#
- 2.Sf7#
- 1...b4
- 2.Rc4#
- 2.Qe5#
- 2.axb4#
- 1...e5
- 2.Se4#
- 2.Rd5#
- 2.Qxe5#
- 1...Sxa5!
- threat
- 1.Rg5+?
- 1...Be5
- 2.Rxe5#
- 2.Qxe5#
- 1...e5!
- 1...Be5
- 1.Sd2?
- Keys
- 1.Sg5!
- threat
- 2.Sge4#
- 1...Bc3+
- 2.Qxc3#
- 1...Bxh8
- 2.Sdf7#
- 1...Sxa5
- 2.Qxd4#
- 1...Be5
- 2.Qxe5#
- 1...Bf6
- 2.Sxe6#
- 1...Bg7
- 2.Rc7#
- 1...Sd2
- 2.Qxd4#
- threat
- 1.Sg5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 5
- Sets
- R(j);N_GUARD,XQ(J)::R(G)
- B(d);::B(I)+S(F)
- B(d);CHECK,OGATE::QAR2(J),XB(d)
- B(d);N_GUARD::QAR2(J),XB(d)
- B(d);S_CUTR(j)::R(G)
- B(d);XQ(J)::B(I)+S(F)
- S(a);N_GUARD::QAB1(J),XB(d)
- S(a);N_GUARD,XP(E)::QAB1(J),XB(d)
- Tries
- Try
- S(C);
- Threat
- DUALS(3)
- Vars
- S(a);N_GUARD,XS(C)::QAB1(J),XB(d)
- S(a);N_GUARD,XP(E)::QAB1(J),XB(d)
- B(d);::B(I)+S(F),DCHECK
- P(e);::S(C)
- Refutation
- P(b);CHECK,XS(C)
- Try
- S(F);CHECK
- Vars
- R(j);P_SPINR(j)::R(G)
- Refutation
- K(f);P-FLIGHT,P_SPINB(d),XS(F)
- Try
- S(F);CHECK
- Vars
- R(j);P_SPINR(j)::R(G)
- Refutation
- K(f);P-FLIGHT,P_SPINB(d)
- Try
- S(F);CHECK
- Vars
- K(f);P-FLIGHT::B(H)+S(F)
- Refutation
- K(f);P-FLIGHT,P_SPINB(d)
- Try
- S(F);CHECK
- Vars
- R(j);P_SPINR(j)::R(G)
- Refutation
- K(f);P-FLIGHT,P_SPINB(d)
- Try
- S(F);CHECK
- Vars
- R(j);P_SPINR(j)::R(G)
- Refutation
- K(f);P-FLIGHT,P_SPINB(d)
- Try
- B(I);
- Threat
- DUALS(2)
- Vars
- B(d);CHECK,OGATE::QAR2(J),XB(d)
- R(j);XB(I)::QAR(J)
- R(j);XQ(J)::R(G)
- S(a);N_GUARD,XP(E)::QAB1(J),XB(d)
- Refutation
- P(e);
- Try
- R(D);XB(d)
- Threat
- DUALS(3)
- Refutation
- S(a);XP(E)
- Try
- R(D);CHECK
- Refutation
- P(h);P_SPINP(h)
- Try
- Actual
- S(C);
- Threat
- S(C)
- Vars
- B(d);CHECK,OGATE::QAR2(J),XB(d)
- B(d);XQ(J)::B(I)+S(F)
- S(a);N_GUARD,XP(E)::QAB1(J),XB(d)
- B(d);N_GUARD::QAR2(J),XB(d)
- B(d);S_CUTR(i)::S(C),XP(h)
- B(d);S_CUTR(j)::R(G)
- S(a);N_GUARD::QAB1(J),XB(d)
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).