MESON Chess Problem Database
Problem Display
PID: 210392 (B2r4/4n3/1Nq2p2/1PQnNP2/RP2k1P1/R7/4P2B/2K5 w - - 0 1)
Coello Alonso, Jose Antonio
BCPS Website, 2020
#2
13 + 6
SOLUTION
- SOUND
- Sets
- 1...Qxb5
- 2.Re3#
- 2.Qe3#
- 1...Qb7
- 2.Qc4#
- 1...Qd7
- 2.Re3#
- 2.Qe3#
- 2.Qc4#
- 1...Qxa8
- 2.Qc4#
- 1...Qe8
- 2.Re3#
- 2.Qe3#
- 2.Qc4#
- 1...Qxc5+
- 2.bxc5#
- 1...Qxb6
- 2.Re3#
- 1...Qd6
- 2.Re3#
- 2.Qe3#
- 2.Qc4#
- 1...Qe6
- 2.Re3#
- 2.Qe3#
- 2.Qc4#
- 1...Qc7
- 2.Re3#
- 1...Qc8
- 2.Re3#
- 1...Se3
- 2.Rxe3#
- 1...Sxb4
- 2.Re3#
- 1...Sf4
- 2.Re3#
- 1...Sxb6
- 2.Re3#
- 1...Sc7
- 2.Re3#
- 1...Qxb5
- Tries
- 1.Sec4?
- threat
- 2.Sd2#
- 1...Sxb4
- 2.Re3#
- 2.Qe3#
- 1...Sxb6
- 2.Re3#
- 1...Sc3
- 2.Qe3#
- 1...Se3
- 2.Rxe3#
- 2.Qxe3#
- 1...Sf4
- 2.Re3#
- 2.Qe3#
- 1...Sc7
- 2.Re3#
- 2.Qe3#
- 1...Qxc5!
- threat
- 1.Sxc6?
- threat
- 2.Qd4#
- 2.Qc2#
- 2.Qc4#
- 1...Sxb4
- 2.Re3#
- 2.Qe3#
- 2.Qxe7#
- 1...Sxb6
- 2.Re3#
- 1...Sxf5
- 2.Qc2#
- 1...Sc3
- 2.Qxe7#
- 1...Se3
- 2.Rxe3#
- 2.Qxe3#
- 2.Qxe7#
- 1...Sf4
- 2.Re3#
- 2.Qe3#
- 1...Sc7
- 2.Re3#
- 2.Qe3#
- 1...Sxc6!
- threat
- 1.Sxd5?
- threat
- 2.Sc3#
- 2.Sxf6#
- 2.Re3#
- 1...Qxc5+
- 2.bxc5#
- 1...Qxd5
- 2.Re3#
- 2.Qe3#
- 2.Qc4#
- 1...Rxd5
- 2.Re3#
- 1...Rxa8
- 2.Sc3#
- 2.Re3#
- 1...Sxf5
- 2.Sc3#
- 2.Sxf6#
- 1...fxe5
- 2.Sc3#
- 2.Sf6#
- 2.Re3#
- 1...Rd6
- 2.Sc3#
- 2.Re3#
- 1...Rf8
- 2.Sc3#
- 2.Re3#
- 1...Sg8
- 2.Sc3#
- 2.Re3#
- 1...Sxd5!
- threat
- 1.Qc2+?
- 1...Kd4
- 2.Sf3#
- 1...Qxc2+!
- 1...Kd4
- 1.Sec4?
- Keys
- 1.Sf3!
- threat
- 2.Sd2#
- 1...Qxc5+
- 2.bxc5#
- 1...Sxb4
- 2.Re3#
- 1...Sxb6
- 2.Re3#
- 1...Sc3
- 2.Qxe7#
- 1...Se3
- 2.Rxe3#
- 1...Sf4
- 2.Re3#
- 1...Sc7
- 2.Re3#
- threat
- 1.Sf3!
This is a version of 210391
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 5
- Sets
- Q(c);N_GUARD,N_PINQ(I)::QAR2(I)
- Q(c);N_GUARD,N_PINQ(I),XB(M)::QAR2(I)
- Q(c);CHECK,OGATE,P_SPINS(b),XQ(I)::R(E)+P(F),XQ(c)
- Q(c);N_PINQ(I),P_SPINS(b),XS(L)::R1(D)
- Q(c);P_SPINS(b)::R1(D)
- S(b);N_GUARD,P_SPINQ(c)::R1(D),XS(b)
- S(b);N_GUARD,P_SPINQ(c),P_SPINS(b),XP(F)::R1(D)
- S(b);N_GUARD,P_SPINQ(c)::R1(D)
- S(b);N_GUARD,P_SPINQ(c),XS(L)::R1(D)
- Tries
- Try
- S(J);N_SPINQ(I)
- Threat
- S(J)
- Vars
- S(b);N_GUARD,P_SPINQ(c),XS(L)::R1(D)
- S(b);N_GUARD,P_SPINQ(c)::QAR1(I)
- Refutation
- Q(c);P_PINS(J),P_SPINS(b),XQ(I)
- Try
- S(J);N_SPINQ(I),XQ(c)
- Threat
- DUALS(3)
- Vars
- S(b);N_GUARD,XS(L)::R1(D)
- S(e);XP(K)::QAB(I)
- S(b);N_GUARD::QAR(I),XS(e)
- Refutation
- S(e);XS(J)
- Try
- S(L);XS(b)
- Threat
- DUALS(3)
- Vars
- Q(c);CHECK,OGATE,XQ(I)::R(E)+P(F),XQ(c)
- R(f);XS(L)::R1(D)
- Refutation
- S(e);XS(L)
- Try
- Q(I);CHECK
- Vars
- K(a);P-FLIGHT::S(J)
- Refutation
- Q(c);CHECK,P_SPINS(b),XQ(I)
- Try
- Actual
- S(J);
- Threat
- S(J)
- Vars
- Q(c);CHECK,OGATE,P_SPINS(b),XQ(I)::R(E)+P(F),XQ(c)
- S(b);N_GUARD,P_SPINQ(c),P_SPINS(b),XP(F)::R1(D)
- S(b);N_GUARD,P_SPINQ(c),XS(L)::R1(D)
- S(b);N_PINQ(I),P_SPINQ(c)::QAR(I),XS(e)
- S(b);N_GUARD,P_SPINQ(c)::R1(D),XS(b)
- S(b);N_GUARD,P_SPINQ(c)::R1(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).