MESON Chess Problem Database
Problem Display
PID: 81187 (B3r3/Br1NP3/3p1Q1b/2n4p/6pR/1n2kpNR/2P5/4K3 w - - 0 1)
Savournin, Jacques
Probleemblad, 1950
#2
10 + 10
SOLUTION
- SOUND
- Sets
- 1...Rb4
- 2.Sf1#
- 1...Rb5
- 2.Sf1#
- 1...Rb6
- 2.Sf1#
- 1...Rxa7
- 2.Sf1#
- 1...Rc7
- 2.Sf1#
- 1...Rxd7
- 2.Sf1#
- 1...Rbb8
- 2.Sf1#
- 1...Bf4
- 2.Qc3#
- 1...Sd4
- 2.Qxh6#
- 1...f2+
- 2.Qxf2#
- 1...gxh3
- 2.Sf1#
- 2.Sf5#
- 2.Re4#
- 2.Qc3#
- 2.Qe6#
- 2.Qxh6#
- 1...d5
- 2.Qe5#
- 1...Rb4
- Tries
- 1.Sxc5?
- threat
- 2.Sf1#
- 1...f2+
- 2.Qxf2#
- 1...dxc5
- 2.Qe5#
- 1...Sd2
- 2.Sxb7#
- 1...Sxc5!
- threat
- 1.Sb6?
- threat
- 2.Sc4#
- 2.Sd5#
- 1...f2+
- 2.Qxf2#
- 1...Rxb6
- 2.Sf1#
- 1...Sd2
- 2.Sd5#
- 1...Sa5
- 2.Sd5#
- 1...d5
- 2.Sxd5#
- 1...Sd3+!
- threat
- 1.Bxc5+?
- 1...Sd4
- 2.Bxd4#
- 2.Qxd4#
- 2.Qxh6#
- 1...dxc5
- 2.Qe5#
- 1...Sxc5!
- 1...Sd4
- 1.Bxb7?
- threat
- 2.Sf1#
- 1...f2+
- 2.Qxf2#
- 1...d5
- 2.Qe5#
- 1...Sd2!
- threat
- 1.Rxg4?
- threat
- 2.Sf1#
- 2.Sf5#
- 2.Re4#
- 2.Qc3#
- 2.Qe6#
- 2.Qxh6#
- 1...f2+
- 2.Qxf2#
- 1...Rxa7
- 2.Sf1#
- 2.Sf5#
- 2.Qxf3#
- 2.Qxh6#
- 1...Rxe7
- 2.Sf1#
- 2.Sf5#
- 2.Qc3#
- 2.Qxe7#
- 2.Qxh6#
- 1...Rb4
- 2.Sf1#
- 2.Sf5#
- 2.Qc3#
- 2.Qxf3#
- 1...Rb6
- 2.Sf1#
- 2.Sf5#
- 2.Qxf3#
- 2.Qxh6#
- 1...Rf8
- 2.Sf1#
- 2.Sf5#
- 2.Re4#
- 2.Qc3#
- 2.Qe6#
- 1...Rg8
- 2.Sf1#
- 2.Sf5#
- 2.Re4#
- 2.Qc3#
- 2.Qe6#
- 1...Rh8
- 2.Sf1#
- 2.Sf5#
- 2.Re4#
- 2.Qc3#
- 2.Qe6#
- 1...Bf4
- 2.Qc3#
- 2.Qxf4#
- 1...Bg5
- 2.Sf1#
- 2.Sf5#
- 2.Re4#
- 2.Qc3#
- 2.Qxg5#
- 2.Qe6#
- 1...Bg7
- 2.Sf1#
- 2.Sf5#
- 2.Re4#
- 2.Qg5#
- 2.Qf4#
- 1...Bf8
- 2.Sf1#
- 2.Sf5#
- 2.Re4#
- 2.Qc3#
- 2.Qg5#
- 2.Qf4#
- 2.Qe6#
- 1...Sc1
- 2.Sf1#
- 2.Sf5#
- 2.Re4#
- 2.Qd4#
- 2.Qe6#
- 2.Qxh6#
- 1...Sd2
- 2.Sf5#
- 2.Qc3#
- 2.Qd4#
- 2.Qxh6#
- 1...Sd4
- 2.Sf1#
- 2.Qxd4#
- 2.Qxh6#
- 1...d5
- 2.Sf1#
- 2.Sf5#
- 2.Qc3#
- 2.Qe5#
- 2.Qe6#
- 2.Qxh6#
- 1...hxg4!
- threat
- 1.Qxf3+?
- 1...Kd4
- 2.Qd3#
- 1...gxf3
- 2.Sf1#
- 2.Sf5#
- 2.Re4#
- 1...Kxf3!
- 1...Kd4
- 1.Qe6+?
- 1...Kf4
- 2.Qxh6#
- 1...Kd4!
- 1...Kf4
- 1.Sxc5?
- Keys
- 1.Se2!
- threat
- 2.Qe6#
- 1...Ke4
- 2.Qxf3#
- 1...Rxa7
- 2.Qxh6#
- 1...Rxe7
- 2.Qxe7#
- 1...Rb4
- 2.Qc3#
- 1...Rb6
- 2.Qxh6#
- 1...Bf4
- 2.Qxf4#
- 1...Bg7
- 2.Qf4#
- 1...Sd2
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- threat
- 1.Se2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 5
- ADDED MATES = 4
- REMOVED MATES = 6
- Sets
- R(i);::S(C)
- R(i);N_SPINS(e)::S(C)
- R(i);N_SPINS(e),XB(G)::S(C)
- R(i);XS(H)::S(C)
- B(h);SBLOCK::QAR2(F)
- S(a);N_SPINS(e),SBLOCK::QAB(F),XB(h)
- P(c);CHECK,OGATE::QAB1(F),XP(c)
- P(g);N_GUARD::QAR2(F)
- Tries
- Try
- S(H);XS(e)
- Threat
- S(C)
- Vars
- P(c);CHECK,OGATE::QAB1(F),XP(c)
- P(g);N_GUARD,P_SPINP(g),XS(H)::QAR2(F)
- S(a);N_GUARD::B(G)+S(H),XR(i)
- Refutation
- S(a);P_SPINS(a),XS(H)
- Try
- S(H);N_PINS(e)
- Threat
- DUALS(2)
- Vars
- P(c);CHECK,OGATE::QAB1(F),XP(c)
- R(i);XS(H)::S(C)
- S(a);::S(H)
- P(g);::S(H),XP(g)
- Refutation
- S(e);CHECK
- Try
- B(G);CHECK,XS(e)
- Vars
- P(g);XB(G)::QAR2(F)
- Refutation
- S(a);XB(G)
- Try
- B(J);XR(i)
- Threat
- S(C)
- Vars
- P(c);CHECK,OGATE::QAB1(F),XP(c)
- P(g);N_GUARD::QAR2(F)
- Refutation
- S(a);
- Try
- R(E);XP(d)
- Threat
- DUALS(6)
- Vars
- P(c);CHECK,OGATE::QAB1(F),XP(c)
- Refutation
- P(f);XR(E)
- Try
- Q(F);CHECK,XP(c)
- Vars
- K(b);OGATE,P_PINP(I),P_SPINP(d),S_FLIGHT::QAR1(F)
- Refutation
- K(b);N_SPINS(e),P-FLIGHT,P_PINP(I),P_SPINR(i),XQ(F)
- Try
- Q(F);CHECK
- Vars
- K(b);N_SPINS(e),P_SPINP(d),S_FLIGHT::QAB(F),XB(h)
- Refutation
- K(b);P_SPINP(d),S_FLIGHT
- Try
- Actual
- S(C);P_PINP(c)
- Threat
- QAR(F)
- Vars
- K(b);N_SPINP(c),N_SPINS(e),P-FLIGHT,P_SPINP(d),P_SPINR(i)::QAB1(F),XP(c)
- R(i);N_SPINS(e),XB(G)::QAB(F),XB(h)
- R(j);OGATE,XP(I)::QAR(F),XR(j)
- R(i);::QAR2(F)
- R(i);N_SPINS(e)::QAB(F),XB(h)
- B(h);N_GUARD::QAB1(F),XB(h)
- B(h);N_GUARD::QAB1(F)
- S(a);N_GUARD::QAB1(F)
- S(a);N_GUARD,N_SPINS(e)::QAB1(F),XS(a)
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).