MESON Chess Problem Database
Problem Display
PID: 54697 (6b1/4p3/2Q5/1Rbnk3/4p3/1NrP1PKB/1B1nRpPN/q4r2 w - - 0 1)
Savournin, Jacques
Nova Macedonia, 1989
#2
11 + 11
| 56 | The Problemist | 2003 |
SOLUTION
- SOUND
- Sets
- 1...Ba3
- 2.d4#
- 2.f4#
- 1...Bb4
- 2.d4#
- 2.f4#
- 1...Bd4
- 2.f4#
- 1...Bb6
- 2.f4#
- 1...Bd6
- 2.Qxc3#
- 1...Ba7
- 2.f4#
- 1...Be6
- 2.Qxe6#
- 1...Bh7
- 2.Qe6#
- 1...Sb1
- 2.Rxe4#
- 1...Sxb3
- 2.Rxe4#
- 1...Sxf3
- 2.Sxf3#
- 2.Rxe4#
- 1...Sc4
- 2.Rxe4#
- 1...Se3
- 2.d4#
- 2.f4#
- 1...Sb4
- 2.d4#
- 2.f4#
- 1...Sf4
- 2.d4#
- 1...Sb6
- 2.d4#
- 2.f4#
- 1...Sf6
- 2.d4#
- 2.f4#
- 1...Sc7
- 2.d4#
- 2.f4#
- 1...Ba3
- Tries
- 1.Bxc3+?
- 1...Bd4
- 2.f4#
- 1...Sxc3
- 2.d4#
- 2.f4#
- 1...Qxc3!
- 1...Bd4
- 1.Bd7?
- threat
- 2.Sg4#
- 1...Sxb3
- 2.Rxe4#
- 1...Be6
- 2.Qxe6#
- 1...Se3
- 2.d4#
- 2.f4#
- 1...Sf6
- 2.d4#
- 2.f4#
- 1...e6!
- threat
- 1.Bc8?
- threat
- 2.Sg4#
- 1...Sxb3
- 2.Rxe4#
- 1...Be6
- 2.Qxe6#
- 1...Se3
- 2.d4#
- 2.f4#
- 1...Sf6
- 2.d4#
- 2.f4#
- 1...e6!
- threat
- 1.Rxc5?
- threat
- 2.d4#
- 2.f4#
- 1...Sxb3
- 2.Rxe4#
- 1...Sxf3
- 2.Sxf3#
- 2.Rxe4#
- 1...Be6
- 2.Qxe6#
- 1...Qa4
- 2.f4#
- 1...e6!
- threat
- 1.dxe4?
- threat
- 2.Sg4#
- 1...Sxe4+
- 2.Rxe4#
- 1...Bd6
- 2.Qxc3#
- 1...Be6
- 2.Qxe6#
- 1...Se3
- 2.f4#
- 1...Sf6
- 2.Qc7#
- 1...Sxb3!
- threat
- 1.Bxc3+?
- Keys
- 1.fxe4!
- threat
- 2.Sg4#
- 1...Sxe4+
- 2.Rxe4#
- 1...Sxb3
- 2.Sf3#
- 1...Bd6
- 2.Qxc3#
- 1...Be6
- 2.Qxe6#
- 1...Se3
- 2.d4#
- 1...Sf6
- 2.Qc7#
- threat
- 1.fxe4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 7
- Sets
- B(g);N_SPINR(e),P_SPINS(h)::P(G)
- B(g);P_SPINS(h)::P(G)
- B(g);OGATE,P_SPINS(h),SBLOCK::QAB(K),XR(e)
- B(k);N_GUARD::QAR1(K),XB(k)
- B(k);N_GUARD::QAR1(K)
- S(c);N_GUARD::R1(B),XP(f)
- S(c);N_GUARD,XS(E)::R1(B),XP(f)
- S(h);P_SPINB(g)::P(F)
- Tries
- Try
- B(A);CHECK,XR(e)
- Vars
- B(g);P_SPINB(g),P_SPINS(h)::P(G)
- Refutation
- Q(a);XB(A)
- Try
- B(I);
- Threat
- S(D)
- Vars
- S(c);N_GUARD,XS(E)::R1(B),XP(f)
- B(k);N_GUARD::QAR1(K),XB(k)
- Refutation
- P(j);
- Try
- B(I);
- Threat
- S(D)
- Vars
- S(c);N_GUARD,XS(E)::R1(B),XP(f)
- B(k);N_GUARD::QAR1(K),XB(k)
- Refutation
- P(j);
- Try
- R(J);P_PINS(h),XB(g)
- Threat
- DUALS(2)
- Vars
- S(c);N_GUARD,XS(E)::R1(B),XP(f)
- B(k);N_GUARD::QAR1(K),XB(k)
- Q(a);::P(G)
- Refutation
- P(j);
- Try
- P(F);P_SPINP(G),XP(f)
- Threat
- S(D)
- Vars
- S(c);CHECK,OGATE,P_SPINS(c),XP(F)::R1(B),XS(c)
- B(g);OGATE,P_SPINS(h),SBLOCK::QAB(K),XR(e)
- B(k);N_GUARD::QAR1(K),XB(k)
- S(h);N_PINP(G),P_SPINB(g)::P(G)
- S(h);N_GUARD,P_SPINB(g),SBLOCK::QAB(K)
- Refutation
- S(c);XS(E)
- Try
- Actual
- P(G);P_SPINP(F),XP(f)
- Threat
- S(D)
- Vars
- S(c);CHECK,OGATE,P_SPINS(c),XP(G)::R1(B),XS(c)
- S(c);N_GUARD,XS(E)::S(D)
- B(g);OGATE,P_SPINS(h),SBLOCK::QAB(K),XR(e)
- B(k);N_GUARD::QAR1(K),XB(k)
- S(h);N_PINP(F),P_SPINB(g)::P(F)
- S(h);N_GUARD,P_SPINB(g),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).