MESON Chess Problem Database
Problem Display
PID: 23277 (3b1Rb1/2n3QB/6r1/1R1nNP2/3rk3/2Pp4/Np1P2PB/1K6 w - - 0 1)
Saunders, Denis M
The Problemist, 1997
#2
12 + 9
SOLUTION
- SOUND
- Sets
- 1...Rxg2
- 2.Qxg2#
- 1...Sxc3+
- 2.Sxc3#
- 1...Rxg2
- Tries
- 1.Sc4?
- threat
- 2.Qxd4#
- 2.Qe5#
- 1...Sxc3+
- 2.Sxc3#
- 1...Rxc4
- 2.Qe5#
- 1...Rxg2
- 2.Qxg2#
- 1...Rxg7
- 2.Sd6#
- 1...Sxb5
- 2.Qe5#
- 1...Bf6
- 2.Sd6#
- 1...Bf7
- 2.Qe5#
- 1...Re6
- 2.Qxd4#
- 1...Sf6
- 2.Re5#
- 1...Se6
- 2.Sd6#
- 2.Qe5#
- 1...Rf6!
- threat
- 1.Sg4?
- threat
- 2.Sf2#
- 2.Qxd4#
- 2.Qe5#
- 1...Sxc3+
- 2.Sxc3#
- 1...Rxg4
- 2.Qxd4#
- 2.Qe5#
- 1...Rxg7
- 2.Sf2#
- 1...Sxb5
- 2.Sf2#
- 2.Qe5#
- 1...Bf7
- 2.Qe5#
- 1...Ra4
- 2.Sf2#
- 2.Qe5#
- 1...Rb4
- 2.Sf2#
- 2.Qe5#
- 1...Rc4
- 2.Sf2#
- 2.Qe5#
- 1...Re6
- 2.Sf2#
- 2.Qxd4#
- 1...Rf6
- 2.Sf2#
- 1...Bh4
- 2.Qxd4#
- 2.Qe5#
- 1...Sf6
- 2.Sf2#
- 2.Re5#
- 1...Se6
- 2.Sf2#
- 2.Qe5#
- 1...Bf6!
- threat
- 1.Sxg6?
- threat
- 2.Qxd4#
- 2.Qe5#
- 1...Sxc3+
- 2.Sxc3#
- 1...Sxb5
- 2.Qe5#
- 1...Bf7
- 2.Qe5#
- 1...Ra4
- 2.Qe5#
- 1...Rb4
- 2.Qe5#
- 1...Rc4
- 2.Qe5#
- 1...Sf6
- 2.Re5#
- 1...Se6
- 2.Qe5#
- 1...Bf6!
- threat
- 1.Sd7?
- threat
- 2.Sc5#
- 2.Qxd4#
- 2.Qe5#
- 1...Sxc3+
- 2.Sxc3#
- 1...Rxg2
- 2.Qxg2#
- 1...Rxg7
- 2.Sc5#
- 1...Sxb5
- 2.Sc5#
- 2.Qe5#
- 1...Rg3
- 2.Qxd4#
- 2.Qe5#
- 1...Bf7
- 2.Qe5#
- 1...Ra4
- 2.Sc5#
- 2.Qe5#
- 1...Rb4
- 2.Sc5#
- 2.Qe5#
- 1...Rc4
- 2.Qe5#
- 1...Rc6
- 2.Qxd4#
- 2.Qe5#
- 1...Re6
- 2.Sc5#
- 2.Qxd4#
- 1...Rf6
- 2.Sc5#
- 1...Be7
- 2.Qxd4#
- 2.Qe5#
- 1...Se3
- 2.Re5#
- 2.Qxd4#
- 2.Qe5#
- 1...Sb4
- 2.Re5#
- 2.Qxd4#
- 2.Qe5#
- 1...Sf4
- 2.Re5#
- 2.Qxd4#
- 2.Qe5#
- 1...Sb6
- 2.Re5#
- 2.Qxd4#
- 2.Qe5#
- 1...Sf6
- 2.Re5#
- 1...Se7
- 2.Re5#
- 2.Qxd4#
- 2.Qe5#
- 1...Sa6
- 2.Qxd4#
- 2.Qe5#
- 1...Se6
- 2.Qe5#
- 1...Bf6!
- threat
- 1.Sc4?
- Keys
- 1.Sf7!
- threat
- 2.Qe5#
- 1...Sxc3+
- 2.Sxc3#
- 1...Kxf5
- 2.Qxg6#
- 1...Rxg2
- 2.Qxg2#
- 1...Rxg7
- 2.Sd6#
- 1...Re6
- 2.Qxd4#
- 1...Rf6
- 2.Sg5#
- 1...Bf6
- 2.Sd6#
- 1...Sf6
- 2.Re5#
- threat
- 1.Sf7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 0
- Sets
- R(f);OGATE,XP(D)::QAB(J),XR(f)
- S(e);CHECK,XP(F)::S(B),XS(e)
- Tries
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- S(e);CHECK,XP(F)::S(B),XS(e)
- R(c);XS(H)::QAR1(J)
- R(f);OGATE,XP(D)::QAB(J),XR(f)
- R(f);N_GUARD,XQ(J)::S(H)
- S(g);XR(G)::QAR1(J)
- B(h);S_CUTR(f)::S(H)
- B(i);::QAR1(J)
- R(f);::QAR1(J),XR(c)
- S(e);OGATE::R1(G)
- Refutation
- R(f);
- Try
- S(H);
- Threat
- DUALS(3)
- Vars
- S(e);CHECK,XP(F)::S(B),XS(e)
- R(f);XQ(J)::S(H)
- B(i);::QAR1(J)
- R(f);::S(H)
- Refutation
- B(h);
- Try
- S(H);XR(f)
- Threat
- DUALS(2)
- Vars
- S(e);CHECK,XP(F)::S(B),XS(e)
- S(g);XR(G)::QAR1(J)
- B(i);::QAR1(J)
- R(c);::QAR1(J)
- S(e);OGATE::R1(G)
- S(g);::QAR1(J)
- Refutation
- B(h);
- Try
- S(H);
- Threat
- DUALS(3)
- Vars
- S(e);CHECK,XP(F)::S(B),XS(e)
- R(f);OGATE,XP(D)::QAB(J),XR(f)
- R(f);XQ(J)::S(H)
- B(i);::QAR1(J)
- R(c);::QAR1(J)
- R(f);::S(H)
- S(e);OGATE::R1(G)
- S(g);::QAR1(J)
- Refutation
- B(h);
- Try
- Actual
- S(H);
- Threat
- QAR1(J)
- Vars
- S(e);CHECK,XP(F)::S(B),XS(e)
- K(d);OGATEB,P_SPINR(f),P_SPINS(e),S_FLIGHT,XP(I)::QAB1(J),XR(f)
- R(f);OGATE,XP(D)::QAB(J),XR(f)
- R(f);N_GUARD,XQ(J)::S(H)
- R(f);::QAR1(J),XR(c)
- R(f);N_GUARD,S_CUTB(h)::S(H)
- B(h);S_CUTR(f)::S(H)
- S(e);OGATE::R1(G)
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).