MESON Chess Problem Database
Problem Display
PID: 143344 (BK3Q2/1nnR4/p7/RN1r1N1P/2p1k1p1/1r2p1B1/4P3/8 w - - 0 1)
Savournin, Jacques
The Problemist, 2011
#2
10 + 9
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.Sc3#
- 1...Rb2
- 2.Sc3#
- 1...Rc3
- 2.Sxc3#
- 1...Rb4
- 2.Sc3#
- 1...Rd4
- 2.Rxd4#
- 1...Rxb5
- 2.Rd4#
- 1...Rc5
- 2.Rd4#
- 1...Re5
- 2.Sbd6#
- 2.Rd4#
- 1...Rxf5
- 2.Rd4#
- 1...Rd6
- 2.Sbxd6#
- 1...Sxa5
- 2.Sd6#
- 1...Sc5
- 2.Sd6#
- 1...Sd6
- 2.Sxd6#
- 1...Sd8
- 2.Sd6#
- 1...Rb1
- Tries
- 1.Sbd6+?
- 1...Rxd6
- 2.Re5#
- 1...Sxd6+!
- 1...Rxd6
- 1.Sfd4?
- threat
- 2.Qf4#
- 1...Rxd7
- 2.Qf5#
- 1...Rd6
- 2.Qf5#
- 1...Rf5
- 2.Qxf5#
- 1...Se6!
- threat
- 1.Sh4?
- threat
- 2.Qf4#
- 1...Rxd7
- 2.Qf5#
- 1...Rd6
- 2.Qf5#
- 1...Rf5
- 2.Rd4#
- 2.Qxf5#
- 1...Se6!
- threat
- 1.Sfd6+?
- 1...Sxd6
- 2.Qf4#
- 1...Rxd6!
- 1...Sxd6
- 1.Sh6?
- threat
- 2.Qf4#
- 1...Rxd7
- 2.Qf5#
- 1...Rd6
- 2.Qf5#
- 1...Rf5
- 2.Rd4#
- 2.Qxf5#
- 1...Se6!
- threat
- 1.Se7?
- threat
- 2.Qf4#
- 1...Rf5
- 2.Rd4#
- 2.Qxf5#
- 1...Se6!
- threat
- 1.Sg7?
- threat
- 2.Qf4#
- 1...Rxd7
- 2.Qf5#
- 1...Rd6
- 2.Qf5#
- 1...Rf5
- 2.Rd4#
- 2.Qxf5#
- 1...Se6!
- threat
- 1.Re7+?
- 1...Re5
- 2.Sbd6#
- 2.Rxe5#
- 1...Se6!
- 1...Re5
- 1.Qe7+?
- 1...Kxf5
- 2.Sd4#
- 1...Re5
- 2.Sbd6#
- 2.Qxe5#
- 1...Se6!
- 1...Kxf5
- 1.Qg7?
- threat
- 2.Qxg4#
- 1...Kxf5
- 2.Qg6#
- 1...Rxf5
- 2.Sd6#
- 2.Rd4#
- 2.Qd4#
- 1...Rxd7
- 2.Qe5#
- 1...Rd6
- 2.Sbxd6#
- 2.Qe5#
- 1...Se6!
- threat
- 1.Sbd6+?
- Keys
- 1.Qd6!
- threat
- 2.Qf4#
- 1...Kxf5
- 2.Qg6#
- 1...Rxf5
- 2.Qd4#
- 1...Rxd6
- 2.Sbxd6#
- 1...Sxd6
- 2.Sxd6#
- 1...Se6
- 2.Qxd5#
- 1...Re5
- 2.Qxe5#
- threat
- 1.Qd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 10
- Sets
- R(a);N_GUARD::S(D)
- R(a);N_GUARD::S(D),XR(a)
- R(f);OGATE,P_SPINS(h)::R1(G),XR(f)
- R(f);OGATE,P_SPINS(h),XS(D)::R1(G)
- R(f);OGATE,P_SPINS(h)::R1(G)
- R(f);OGATE,P_SPINS(h),XS(E)::R1(G)
- R(f);N_GUARD,P_SPINS(h)::S(D),XR(f)
- S(h);N_GUARD,P_PINS(D),P_SPINR(f),XR(C)::S(E)
- S(h);N_GUARD,P_PINS(D),P_SPINR(f)::S(E)
- S(h);N_GUARD,P_PINS(D),P_SPINR(f)::S(E),XS(h)
- Tries
- Try
- S(D);CHECK
- Vars
- R(f);OGATE,P_SPINS(h),XS(D)::R1(C)
- Refutation
- S(h);CHECK,P_SPINR(f),XS(D)
- Try
- S(E);
- Threat
- QAR1(J)
- Vars
- R(f);N_GUARD,P_SPINS(h),XR(G)::QAB1(J)
- R(f);N_GUARD,P_SPINS(h)::QAB1(J)
- R(f);N_GUARD,P_SPINS(h)::QAB1(J),XR(f)
- Refutation
- S(i);
- Try
- S(E);
- Threat
- QAR1(J)
- Vars
- R(f);N_GUARD,P_SPINS(h),XR(G)::QAB1(J)
- R(f);N_GUARD,P_SPINS(h)::QAB1(J)
- Refutation
- S(i);
- Try
- S(E);CHECK
- Vars
- S(h);P_PINS(D),P_SPINR(f),XS(E)::QAR1(J)
- Refutation
- R(f);P_SPINS(h),XS(E)
- Try
- S(E);
- Threat
- QAR1(J)
- Vars
- R(f);N_GUARD,P_SPINS(h),XR(G)::QAB1(J)
- R(f);N_GUARD,P_SPINS(h)::QAB1(J)
- Refutation
- S(i);
- Try
- S(E);
- Threat
- QAR1(J)
- Refutation
- S(i);
- Try
- S(E);
- Threat
- QAR1(J)
- Vars
- R(f);N_GUARD,P_SPINS(h),XR(G)::QAB1(J)
- R(f);N_GUARD,P_SPINS(h)::QAB1(J)
- Refutation
- S(i);
- Try
- R(G);CHECK
- Refutation
- S(i);P_SPINS(i)
- Try
- Q(J);CHECK
- Vars
- K(d);S_FLIGHT,XS(E)::S(D)
- Refutation
- S(i);P_SPINS(i)
- Try
- Q(J);
- Threat
- QAR2(J),XP(e)
- Vars
- K(d);OGATEB,S_FLIGHT,XS(E)::QAB1(J)
- R(f);N_GUARD,P_SPINS(h),XR(G)::QAR1(J)
- Refutation
- S(i);
- Try
- Actual
- Q(J);
- Threat
- QAR1(J)
- Vars
- K(d);OGATEB,S_FLIGHT,XS(E)::QAB1(J)
- R(f);OGATE,P_SPINS(h),SBLOCK,XS(E)::QAR1(J)
- R(f);P_SPINS(h),XQ(J)::S(D),XR(f)
- S(h);P_PINS(D),P_SPINR(f),XQ(J)::S(E),XS(h)
- S(i);N_GUARD::QAB1(J),XR(f)
- R(f);N_GUARD,P_SPINS(h)::QAR1(J),XR(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).