MESON Chess Problem Database
Problem Display
PID: 154266 (5n2/3P1Q2/K1p1rN2/2p1p2P/1bp4R/2Pk2pr/2R4N/nBB5 w - - 0 1)
Mariani, Stefano
Die Schwalbe, 2014
#2
11 + 11
SOLUTION
- SOUND
- Sets
- 1...Rd6
- 2.Qxc4#
- 1...Rxf6
- 2.Qxc4#
- 1...Re7
- 2.Qxc4#
- 1...Re8
- 2.Qxc4#
- 1...gxh2
- 2.Rxh3#
- 1...g2
- 2.Rxh3#
- 1...Rd6
- Tries
- 1.Se4?
- threat
- 2.Qf1#
- 2.Qf3#
- 1...Rxh2
- 2.Qf3#
- 1...Rxh4
- 2.Qf3#
- 1...Bxc3
- 2.Sxc5#
- 1...gxh2
- 2.Sf2#
- 2.Qf1#
- 1...g2
- 2.Sf2#
- 1...Rf6!
- threat
- 1.Sd5?
- threat
- 2.Rd2#
- 2.Qf1#
- 2.Qf3#
- 1...Rxh2
- 2.Rd2#
- 2.Qf3#
- 1...Rxh4
- 2.Rd2#
- 2.Qf3#
- 1...Sxc2
- 2.Qf1#
- 2.Qf3#
- 1...gxh2
- 2.Rd2#
- 2.Qf1#
- 1...Rf6
- 2.Rd2#
- 1...g2
- 2.Rd2#
- 1...e4
- 2.Sf4#
- 2.Rd2#
- 2.Qf1#
- 1...cxd5+!
- threat
- 1.Sh7?
- threat
- 2.Qf1#
- 2.Qf3#
- 1...Rxh2
- 2.Qf3#
- 1...Rxh4
- 2.Qf3#
- 1...Sxc2
- 2.Qf3#
- 1...gxh2
- 2.Qf1#
- 1...Rf6
- 2.Qxc4#
- 1...e4
- 2.Qf1#
- 1...g2!
- threat
- 1.Se8?
- threat
- 2.Qf1#
- 2.Qf3#
- 1...Rxh2
- 2.Qf3#
- 1...Rxh4
- 2.Qf3#
- 1...Sxc2
- 2.Qf3#
- 1...gxh2
- 2.Qf1#
- 1...Rf6
- 2.Qxc4#
- 1...e4
- 2.Qf1#
- 1...g2!
- threat
- 1.Sg8?
- threat
- 2.Qf1#
- 2.Qf3#
- 1...Rxh2
- 2.Qf3#
- 1...Rxh4
- 2.Qf3#
- 1...Sxc2
- 2.Qf3#
- 1...gxh2
- 2.Qf1#
- 1...Rf6
- 2.Qxc4#
- 1...e4
- 2.Qf1#
- 1...g2!
- threat
- 1.Rd2+?
- 1...Ke3
- 2.Sfg4#
- 2.Ra2#
- 2.Rb2#
- 2.Rg2#
- 2.Re4#
- 1...Kxc3!
- 1...Ke3
- 1.Re2+?
- 1...Kxc3
- 2.Re3#
- 1...Sc2
- 2.Re3#
- 1...Kxe2!
- 1...Kxc3
- 1.Rf2+?
- 1...Kxc3
- 2.Rf3#
- 1...Sc2!
- 1...Kxc3
- 1.d8Q+?
- 1...Rd6
- 2.Qxc4#
- 2.Qxd6#
- 1...Sd7!
- 1...Rd6
- 1.d8R+?
- 1...Rd6
- 2.Rxd6#
- 2.Qxc4#
- 1...Sd7!
- 1...Rd6
- 1.Se4?
- Keys
- 1.Sfg4!
- threat
- 2.Qf3#
- 1...Ke4
- 2.Qf3#
- 1...Bxc3
- 2.Rd2#
- 1...gxh2
- 2.Sf2#
- 1...Rf6
- 2.Sxe5#
- 1...g2
- 2.Sf2#
- 1...e4
- 2.Qf1#
- threat
- 1.Sfg4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 3
- REMOVED MATES = 3
- Sets
- R(j);OGATE::QAB1(K),XP(f)
- R(j);OGATE,XS(I)::QAB1(K),XP(f)
- P(c);OGATEB,XS(D)::R(F),XR(d)
- P(c);OGATEB::R(F),XR(d)
- Tries
- Try
- S(I);
- Threat
- DUALS(2)
- Vars
- R(d);XS(D)::QAR2(K)
- R(d);XR(F)::QAR2(K)
- B(e);N_GUARD,XP(E)::S(I),XP(g)
- P(c);N_GUARD::S(I)
- Refutation
- R(j);
- Try
- S(I);
- Threat
- DUALS(3)
- Vars
- R(j);::B(A)+R(C),DCHECK
- P(c);::B(A)+R(C),DCHECK
- Refutation
- P(i);CHECK,XS(I)
- Try
- S(I);
- Threat
- DUALS(2)
- Vars
- R(d);XS(D)::QAR2(K)
- R(d);XR(F)::QAR2(K)
- S(a);P_SPINS(a),XR(C)::QAR2(K)
- P(c);XS(D)::QAB(K)
- R(j);OGATE::QAB1(K),XP(f)
- P(h);::QAB(K)
- Refutation
- P(c);
- Try
- S(I);
- Threat
- DUALS(2)
- Vars
- R(d);XS(D)::QAR2(K)
- R(d);XR(F)::QAR2(K)
- S(a);P_SPINS(a),XR(C)::QAR2(K)
- P(c);XS(D)::QAB(K)
- R(j);OGATE::QAB1(K),XP(f)
- P(h);::QAB(K)
- Refutation
- P(c);
- Try
- S(I);
- Threat
- DUALS(2)
- Vars
- R(d);XS(D)::QAR2(K)
- R(d);XR(F)::QAR2(K)
- S(a);P_SPINS(a),XR(C)::QAR2(K)
- P(c);XS(D)::QAB(K)
- R(j);OGATE::QAB1(K),XP(f)
- P(h);::QAB(K)
- Refutation
- P(c);
- Try
- R(C);CHECK
- Refutation
- K(b);P-FLIGHT,XP(E)
- Try
- R(C);CHECK
- Vars
- K(b);P-FLIGHT,XP(E)::R(C)
- S(a);P_SPINS(a)::R1(C)
- Refutation
- K(b);S_FLIGHT,XR(C)
- Try
- R(C);CHECK
- Vars
- K(b);P-FLIGHT,XP(E)::R(C)
- Refutation
- S(a);P_SPINS(a)
- Try
- P(J);CHECK
- Refutation
- S(k);P_SPINS(k)
- Try
- P(J);CHECK
- Refutation
- S(k);P_SPINS(k)
- Try
- Actual
- S(I);
- Threat
- QAR2(K)
- Vars
- K(b);S_FLIGHT::QAB1(K)
- B(e);SBLOCK,XP(E)::B(A)+R(C),DCHECK
- P(c);N_GUARD,XS(D)::S(I)
- R(j);N_GUARD::S(I),XP(h)
- P(c);N_GUARD::S(I)
- P(h);SBLOCK::QAB(K)
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).