MESON Chess Problem Database
Problem Display
PID: 7622 (1b1R4/1Qp1Kp1B/2p1p1rN/4k2N/R4r2/p4b2/n2PP1nB/8 w - - 0 1)
Paslack, Rainer
Die Schwalbe, 1992
#2
10 + 12
SOLUTION
- SOUND
- Sets
- 1...Rg4
- 2.Sxf7#
- 2.d4#
- 1...Rg5
- 2.Sxf7#
- 2.d4#
- 1...Rf6
- 2.d4#
- 1...Rxh6
- 2.d4#
- 1...Rg7
- 2.d4#
- 1...Rg8
- 2.Sxf7#
- 2.d4#
- 1...Be4
- 2.d4#
- 1...Ba7
- 2.Qxc7#
- 1...Se1
- 2.Bxf4#
- 1...Se3
- 2.Bxf4#
- 1...Sh4
- 2.Bxf4#
- 1...f5
- 2.Sf7#
- 1...Rg4
- Tries
- 1.Sxf4?
- threat
- 2.Sd3#
- 2.Sxg6#
- 1...Rxh6
- 2.Sd3#
- 2.d4#
- 1...Sxf4
- 2.Bxf4#
- 1...Rg3
- 2.Sd3#
- 2.Sxf7#
- 1...Rg4
- 2.Sd3#
- 2.Sg6#
- 2.Sxf7#
- 2.d4#
- 1...Rg5
- 2.Sd3#
- 2.Sg6#
- 2.Sxf7#
- 2.d4#
- 1...Rf6
- 2.Sd3#
- 2.Sg6#
- 2.d4#
- 1...Rg7
- 2.Sd3#
- 2.Sg6#
- 2.d4#
- 1...Rg8
- 2.Sd3#
- 2.Sg6#
- 2.Sxf7#
- 2.d4#
- 1...Sb4!
- threat
- 1.Bxg6?
- threat
- 2.Sxf7#
- 2.d4#
- 1...Ba7
- 2.Sxf7#
- 2.Qxc7#
- 1...c5
- 2.Sxf7#
- 1...f5
- 2.Sf7#
- 1...f6
- 2.Sf7#
- 2.d4#
- 1...fxg6!
- threat
- 1.Re4+?
- 1...Bxe4
- 2.d4#
- 1...Kxe4!
- 1...Bxe4
- 1.Rxf4?
- threat
- 2.Sxf7#
- 2.d4#
- 1...Rxh6
- 2.Re4#
- 2.d4#
- 1...Rf6
- 2.Re4#
- 2.d4#
- 1...Rg7
- 2.Re4#
- 2.d4#
- 1...Ba7
- 2.Sxf7#
- 2.Qxc7#
- 1...c5
- 2.Sxf7#
- 2.Re4#
- 2.Rf5#
- 1...f5
- 2.Sf7#
- 2.d4#
- 1...f6
- 2.Sf7#
- 2.d4#
- 1...Sxf4!
- threat
- 1.Ra5+?
- 1...Ke4
- 2.Sg3#
- 2.Qxc6#
- 2.Qb1#
- 1...c5
- 2.d4#
- 1...Bd5!
- 1...Ke4
- 1.Qb1?
- threat
- 2.Sxf7#
- 2.d4#
- 1...Rxh6
- 2.d4#
- 1...Rf6
- 2.d4#
- 1...Rg7
- 2.d4#
- 1...Be4
- 2.Rxe4#
- 2.Qxe4#
- 2.d4#
- 1...Ba7
- 2.Sxf7#
- 1...c5
- 2.Sxf7#
- 1...f5
- 2.Sf7#
- 2.d4#
- 1...f6
- 2.Sf7#
- 2.d4#
- 1...Rg3!
- threat
- 1.Qb2+?
- 1...Sc3
- 2.Qxc3#
- 1...axb2!
- 1...Sc3
- 1.exf3?
- threat
- 2.Re4#
- 2.d4#
- 1...Ba7
- 2.Re4#
- 2.Qxc7#
- 1...Sc3
- 2.d4#
- 1...Sb4
- 2.d4#
- 1...c5
- 2.Re4#
- 2.Qe4#
- 1...f5
- 2.Sf7#
- 2.d4#
- 1...Rg3!
- threat
- 1.e4?
- threat
- 2.Sxf7#
- 1...Rxh6
- 2.d4#
- 1...Bxe4
- 2.d4#
- 1...Rg3
- 2.d4#
- 1...Rf6
- 2.d4#
- 1...Rg7
- 2.d4#
- 1...f5
- 2.Sf7#
- 1...f6
- 2.Sf7#
- 1...Sb4!
- threat
- 1.Sxf4?
- Keys
- 1.Sf6!
- threat
- 2.d4#
- 1...Rg3
- 2.Sxf7#
- 1...Ba7
- 2.Qxc7#
- 1...c5
- 2.Sd7#
- threat
- 1.Sf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 8
- Sets
- R(i);::P(A)
- R(i);XS(F)::P(A)
- B(d);SBLOCK::P(A)
- B(l);N_GUARD::QAB(G),XP(j)
- S(b);N_GUARD::B(C),XR(e)
- P(k);SBLOCK::S(F)
- Tries
- Try
- S(E);XR(e)
- Threat
- DUALS(2)
- Vars
- S(b);OGATE,P_SPINS(b),XS(E)::B(C),XS(b)
- Refutation
- S(a);
- Try
- B(I);XR(i)
- Threat
- DUALS(2)
- Vars
- P(g);::S(F),XP(k)
- P(k);::S(F)
- Refutation
- P(k);XB(I)
- Try
- R(D);CHECK
- Vars
- B(d);SBLOCK,XR(D)::P(A)
- Refutation
- K(f);N_SPINR(e),P-FLIGHT,P_SPINP(g),P_SPINR(i),XR(D)
- Try
- R(D);XR(e)
- Threat
- DUALS(2)
- Refutation
- S(b);P_SPINS(b),XR(D)
- Try
- R(D);CHECK
- Vars
- P(g);P_SPINP(g)::P(A)
- Refutation
- B(d);P_SPINB(d)
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- R(i);XS(F)::P(A)
- R(i);::P(A)
- B(l);::S(F),XP(k)
- P(g);::S(F),XP(k)
- Refutation
- R(i);N_SPINR(e)
- Try
- Q(G);CHECK
- Vars
- S(a);N_GUARD,P_SPINS(a)::QAB(G),XS(a)
- Refutation
- P(c);XQ(G)
- Try
- P(B);XB(d)
- Threat
- DUALS(2)
- Vars
- S(a);::P(A)
- Refutation
- R(i);N_SPINR(e)
- Try
- P(B);
- Threat
- S(F),XP(k)
- Vars
- R(i);XS(F)::P(A)
- B(d);SBLOCK,XP(B)::P(A)
- R(i);N_SPINR(e)::P(A)
- R(i);::P(A)
- P(k);::S(F)
- Refutation
- S(a);
- Try
- Actual
- S(E);
- Threat
- P(A)
- Vars
- R(i);N_SPINR(e)::S(F),XP(k)
- B(l);N_GUARD::QAB(G),XP(j)
- P(g);::S(E)
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).