MESON Chess Problem Database
Problem Display
PID: 274390 (2bnn3/K2NPrR1/2p1k3/2Q4B/6P1/B7/8/8 w - - 0 1)
van Vloodorp, J
Probleemblad, 1953
#2
8 + 6
SOLUTION
- SOUND
- Sets
- 1...Rf1
- 2.exd8S#
- 1...Rf2
- 2.exd8S#
- 1...Rf3
- 2.exd8S#
- 1...Rf4
- 2.exd8S#
- 1...Rf5
- 2.Qxf5#
- 2.exd8S#
- 1...Rf6
- 2.exd8S#
- 1...Rxe7
- 2.Rxe7#
- 2.Qf5#
- 1...Rxg7
- 2.Qf5#
- 1...Rf8
- 2.exd8S#
- 2.exf8S#
- 1...Sd6
- 2.Qxd6#
- 1...Sf6
- 2.Qd6#
- 2.Qf5#
- 1...Sc7
- 2.Qd6#
- 1...Sxg7
- 2.Qd6#
- 1...Rf1
- Tries
- 1.Sf8+?
- 1...Kf6
- 2.Bb2#
- 2.Rg6#
- 2.Qd4#
- 2.Qc3#
- 2.Qg5#
- 1...Rxf8!
- 1...Kf6
- 1.Bxf7+?
- 1...Sxf7
- 2.Qf5#
- 1...Kxd7!
- 1...Sxf7
- 1.Rxf7?
- threat
- 2.Sf8#
- 2.Qf5#
- 2.exd8S#
- 1...Bxd7
- 2.Qf5#
- 2.exd8S#
- 1...Sxf7
- 2.Qf5#
- 1...Sb7
- 2.Sf8#
- 2.Qf5#
- 1...Sd6
- 2.Sf8#
- 2.Qxd6#
- 2.exd8S#
- 1...Sg7
- 2.Sf8#
- 2.Qd6#
- 2.exd8S#
- 1...Kxd7!
- threat
- 1.Qe3+?
- 1...Kd5
- 2.Sb6#
- 1...Kxd7!
- 1...Kd5
- 1.Qd4?
- threat
- 2.exd8S#
- 1...Rxe7
- 2.Rxe7#
- 1...Sd6
- 2.Qxd6#
- 1...Sb7
- 2.Bxf7#
- 1...c5!
- threat
- 1.Qxc6+?
- 1...Sd6
- 2.Qxd6#
- 1...Sxc6+!
- 1...Sd6
- 1.exd8Q?
- threat
- 2.Bxf7#
- 2.Qc4#
- 2.Qe5#
- 1...Rxg7
- 2.Qc4#
- 2.Qe5#
- 2.Qf5#
- 1...Bxd7
- 2.Bxf7#
- 1...Sxg7
- 2.Qd6#
- 2.Qc4#
- 2.Qe5#
- 2.Qxc6#
- 1...Rf1
- 2.Re7#
- 2.Qde7#
- 2.Qc4#
- 2.Qe5#
- 2.Qxe8#
- 1...Rf2
- 2.Re7#
- 2.Qde7#
- 2.Qc4#
- 2.Qe5#
- 2.Qxe8#
- 1...Rf3
- 2.Re7#
- 2.Qde7#
- 2.Qc4#
- 2.Qe5#
- 2.Qxe8#
- 1...Rf4
- 2.Re7#
- 2.Qde7#
- 2.Qe5#
- 2.Qxe8#
- 1...Rf5
- 2.Re7#
- 2.Qde7#
- 2.Qxf5#
- 2.Qxe8#
- 2.gxf5#
- 1...Rf6
- 2.Re7#
- 2.Qde7#
- 2.Qc4#
- 2.Qe5#
- 2.Qxe8#
- 1...Re7
- 2.Rxe7#
- 2.Qdxe7#
- 2.Qc4#
- 2.Qe5#
- 2.Qf5#
- 1...Rf8
- 2.Sxf8#
- 2.Re7#
- 2.Qde7#
- 2.Qc4#
- 2.Qe5#
- 1...Ba6
- 2.Bxf7#
- 2.Qe5#
- 1...Sd6
- 2.Qxd6#
- 2.Qe5#
- 1...Sf6
- 2.Bxf7#
- 2.Qd6#
- 2.Qe5#
- 2.Qf5#
- 2.Qxc6#
- 1...Sc7
- 2.Bxf7#
- 2.Qd6#
- 2.Qe5#
- 2.Qxc6#
- 1...Rxd7+!
- threat
- 1.Sf8+?
- Keys
- 1.Sf6!
- threat
- 2.Qf5#
- 1...Rxe7+
- 2.Qxe7#
- 1...Kxf6
- 2.Rg6#
- 1...Rxf6
- 2.exd8S#
- 1...Sxg7
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- threat
- 1.Sf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 6
- Sets
- R(c);::PXS(e)=S
- R(c);N_GUARD,XR(H)::QAB1(C)
- S(f);N_GUARD::QAR1(C),XS(f)
- S(f);N_GUARD::QAR1(C)
- S(f);N_GUARD,XR(H)::QAR1(C)
- Tries
- Try
- S(F);CHECK,P_SPINP(G)
- Refutation
- R(c);N_PINP(G),XS(F)
- Try
- B(D);CHECK,XR(c)
- Vars
- S(e);XB(D)::QAB1(C)
- Refutation
- K(b);S_FLIGHT,XS(F)
- Try
- R(H);XR(c)
- Threat
- DUALS(3)
- Vars
- S(e);XR(H)::QAB1(C)
- Refutation
- K(b);S_FLIGHT,XS(F)
- Try
- Q(C);CHECK
- Vars
- K(b);N_GUARD,S_FLIGHT::S(F)
- Refutation
- K(b);S_FLIGHT,XS(F)
- Try
- Q(C);
- Threat
- PXS(e)=S
- Vars
- R(c);OGATE,P_PINS(F),XP(G)::R1(H),XR(c)
- S(f);N_GUARD::QAR1(C),XS(f)
- S(e);N_GUARD::B(D),XR(c)
- Refutation
- P(a);
- Try
- Q(C);CHECK,XP(a)
- Vars
- S(f);N_GUARD,P_SPINS(f)::QAR1(C),XS(f)
- Refutation
- S(e);CHECK,XQ(C)
- Try
- P(G);P_SPINS(F),XS(e)
- Threat
- DUALS(3)
- Vars
- B(d);XS(F)::B(D),XR(c)
- Refutation
- R(c);CHECK,XS(F)
- Try
- Actual
- S(F);P_SPINP(G)
- Threat
- QAB1(C)
- Vars
- R(c);CHECK,OGATE,XP(G)::QAR1(C),XR(c)
- K(b);OGATEB,P-FLIGHT,XS(F)::R1(H)
- R(c);N_PINP(G),SBLOCK,XS(F)::PXS(e)=S
- S(f);N_GUARD,XR(H)::QAR1(C)
- S(f);N_GUARD::QAR1(C),XS(f)
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).