MESON Chess Problem Database
Problem Display
PID: 276656 (b7/5N1K/2NQPpPB/1pp2pR1/B3k1r1/4P1n1/ppR2PP1/1qb5 w - - 0 1)
Doukhan, Gerard
Best Problems, 2024
#2
13 + 12
SOLUTION
- SOUND
- Sets
- 1...Qxc2
- 2.Bxc2#
- 1...Bxe3
- 2.f3#
- 1...bxa4
- 2.Rc4#
- 1...b4
- 2.Rc4#
- 1...c4
- 2.Qd4#
- 1...f4
- 2.Qd5#
- 1...Qxc2
- Tries
- 1.Bb3?
- threat
- 2.Qd5#
- 1...Bxe3
- 2.f3#
- 1...c4
- 2.Qd4#
- 1...Bxc6!
- threat
- 1.Bxb5?
- threat
- 2.Bd3#
- 2.Rc4#
- 2.Qd3#
- 1...Bxe3
- 2.Bd3#
- 2.f3#
- 1...Se2
- 2.Bd3#
- 2.Qd3#
- 1...c4
- 2.Rxc4#
- 2.Qd4#
- 1...Qxc2!
- threat
- 1.Rd2?
- threat
- 2.Qd5#
- 1...Bxc6
- 2.Qxc6#
- 1...Qd3
- 2.Qxd3#
- 1...Bxd2!
- threat
- 1.Rc3?
- threat
- 2.f3#
- 1...Qd3
- 2.Qxd3#
- 1...Rf4!
- threat
- 1.Rxc5?
- threat
- 2.Qd4#
- 2.Qd5#
- 1...Bxe3
- 2.f3#
- 1...Bxc6
- 2.Qd4#
- 1...Se2
- 2.Qd5#
- 1...Qd3!
- threat
- 1.Rxg4+?
- 1...f4
- 2.Rxf4#
- 1...fxg4!
- 1...f4
- 1.Rxf5?
- threat
- 2.Qd5#
- 1...Kxf5
- 2.Qd5#
- 1...Sxf5
- 2.f3#
- 1...Bxc6!
- threat
- 1.Qd2?
- threat
- 2.Sd6#
- 2.f3#
- 1...Bxc6
- 2.f3#
- 1...Rf4
- 2.Sd6#
- 1...Bxd2!
- threat
- 1.e7?
- threat
- 2.e8Q#
- 2.e8R#
- 1...Qxc2
- 2.Bxc2#
- 2.e8Q#
- 2.e8R#
- 1...Rxg5
- 2.e8Q#
- 2.e8R#
- 1...Bxe3
- 2.f3#
- 2.e8Q#
- 2.e8R#
- 1...bxa4
- 2.Rc4#
- 2.e8Q#
- 2.e8R#
- 1...fxg5
- 2.e8Q#
- 2.e8R#
- 1...a1Q
- 2.e8Q#
- 2.e8R#
- 1...a1S
- 2.e8Q#
- 2.e8R#
- 1...a1B
- 2.e8Q#
- 2.e8R#
- 1...a1R
- 2.e8Q#
- 2.e8R#
- 1...Rf4
- 2.e8Q#
- 2.e8R#
- 1...Qa1
- 2.e8Q#
- 2.e8R#
- 1...Rh4
- 2.e8Q#
- 2.e8R#
- 1...Bd2
- 2.e8Q#
- 2.e8R#
- 1...Bb7
- 2.e8Q#
- 2.e8R#
- 1...Sf1
- 2.e8Q#
- 2.e8R#
- 1...Sh1
- 2.e8Q#
- 2.e8R#
- 1...Se2
- 2.e8Q#
- 2.e8R#
- 1...Sh5
- 2.e8Q#
- 2.e8R#
- 1...b4
- 2.Rc4#
- 2.e8Q#
- 2.e8R#
- 1...c4
- 2.Qd4#
- 2.e8Q#
- 2.e8R#
- 1...f4
- 2.Qd5#
- 2.e8Q#
- 2.e8R#
- 1...Bxc6!
- threat
- 1.Bb3?
- Keys
- 1.Sb4!
- threat
- 2.Qd3#
- 1...Qxc2
- 2.Bxc2#
- 1...Bxe3
- 2.f3#
- 1...cxb4
- 2.Qd4#
- 1...Bd5
- 2.Qxd5#
- 1...c4
- 2.Qd4#
- threat
- 1.Sb4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 3
- Sets
- Q(a);OGATE,XR(A)::B(E),XQ(a)
- B(b);SBLOCK,XP(D)::P(B)
- P(h);N_GUARD,XB(E)::R(A)
- P(h);N_GUARD::R(A)
- P(i);N_GUARD::QAR1(H)
- P(j);::QAB1(H)
- Tries
- Try
- B(E);
- Threat
- QAB1(H)
- Vars
- B(b);SBLOCK,XP(D)::P(B)
- P(i);N_GUARD::QAR1(H)
- Refutation
- B(l);XS(G)
- Try
- B(E);XP(h)
- Threat
- DUALS(3)
- Refutation
- Q(a);XR(A)
- Try
- R(A);
- Threat
- QAB1(H)
- Vars
- B(l);OGATE,XS(G)::QAB(H),XB(l)
- Q(a);N_GUARD::QAB1(H),XQ(a)
- Refutation
- B(b);XR(A)
- Try
- R(A);
- Threat
- P(B)
- Vars
- Q(a);N_GUARD::QAB1(H),XQ(a)
- Refutation
- R(g);
- Try
- R(A);XP(i)
- Threat
- DUALS(2)
- Vars
- B(b);SBLOCK,XP(D)::P(B)
- B(l);XS(G)::QAR1(H)
- S(e);::QAB1(H)
- Refutation
- Q(a);
- Try
- R(F);CHECK,XR(g)
- Vars
- P(j);P_SPINP(j)::R1(F),XP(j)
- Refutation
- P(j);XR(F)
- Try
- R(F);XP(j)
- Threat
- QAB1(H)
- Vars
- K(f);S_FLIGHT,XR(F)::QAR2(H)
- S(e);SBLOCK,XR(F)::P(B)
- Refutation
- B(l);XS(G)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- B(l);XS(G)::P(B)
- R(g);::S(L)
- Refutation
- B(b);XQ(H)
- Try
- P(I);
- Threat
- P=Q
- Vars
- R(g);XR(F)::P=Q
- P(k);XR(F)::P=Q
- P(c);::P=Q
- R(g);::P=Q
- Q(a);::P=Q
- R(g);P_PINB(K)::P=Q
- B(b);::P=Q
- B(l);::P=Q
- S(e);::P=Q
- Refutation
- B(l);XS(G)
- Try
- Actual
- S(G);
- Threat
- QAB1(H)
- Vars
- Q(a);OGATE,XR(A)::B(E),XQ(a)
- B(b);SBLOCK,XP(D)::P(B)
- P(i);N_GUARD,XS(G)::QAR1(H)
- B(l);N_GUARD::QAB1(H),XB(l)
- P(i);N_GUARD::QAR1(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).