MESON Chess Problem Database
Problem Display
PID: 203418 (7R/5n1p/5Qpk/2K2Pr1/6P1/4n1N1/2p2N2/2B5 w - - 0 1)
Oosterholt, Cornelis Johannes
Oprechte Haarlemsche Courant, 1924
#2
8 + 7
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Rxg4
- 2.Sxg4#
- 1...Rxf5+
- 2.Sxf5#
- 1...Rh5
- 2.Qxg6#
- 1...Sd1
- 2.Qxg6#
- 1...Sf1
- 2.Qxg6#
- 1...Sg2
- 2.Qxg6#
- 1...Sc4
- 2.Qxg6#
- 1...Sxg4
- 2.Sxg4#
- 2.Qxg6#
- 1...Sd5
- 2.Qxg6#
- 1...Sxf5
- 2.Sxf5#
- 1...Se5
- 2.Qf8#
- 1...Sd6
- 2.Qf8#
- 1...Sd8
- 2.Qf8#
- 1...Sxh8
- 2.Qf8#
- 1...Rxg4
- Tries
- 1.Kb4?
- 1...Rxg4+
- 2.Sxg4#
- 1...Rxf5
- 2.Sxf5#
- 1...Sxg4
- 2.Sxg4#
- 2.Qxg6#
- 1...Sxf5
- 2.Sxf5#
- 1...Sxh8
- 2.Qf8#
- 1...Rh5
- 2.Qxg6#
- 1...Sd1
- 2.Qxg6#
- 1...Sf1
- 2.Qxg6#
- 1...Sg2
- 2.Qxg6#
- 1...Sc4
- 2.Qxg6#
- 1...Se5
- 2.Qf8#
- 1...Sd6
- 2.Qf8#
- 1...Sd8
- 2.Qf8#
- 1...Sd5+!
- 1...Rxg4+
- 1.Kb5?
- 1...Rxf5+
- 2.Sxf5#
- 1...Rxg4
- 2.Sxg4#
- 1...Sxg4
- 2.Sxg4#
- 2.Qxg6#
- 1...Sxf5
- 2.Sxf5#
- 1...Sxh8
- 2.Qf8#
- 1...Rh5
- 2.Qxg6#
- 1...Sd1
- 2.Qxg6#
- 1...Sf1
- 2.Qxg6#
- 1...Sg2
- 2.Qxg6#
- 1...Sc4
- 2.Qxg6#
- 1...Sd5
- 2.Qxg6#
- 1...Se5
- 2.Qf8#
- 1...Sd8
- 2.Qf8#
- 1...Sd6+!
- 1...Rxf5+
- 1.Sfh1?
- 1...Rxf5+
- 2.Sxf5#
- 1...Sxg4
- 2.Qxg6#
- 1...Sxf5
- 2.Sxf5#
- 1...Sxh8
- 2.Qf8#
- 1...Rh5
- 2.Qxg6#
- 1...Sd1
- 2.Qxg6#
- 1...Sf1
- 2.Qxg6#
- 1...Sg2
- 2.Qxg6#
- 1...Sc4
- 2.Qxg6#
- 1...Sd5
- 2.Qxg6#
- 1...Se5
- 2.Qf8#
- 1...Sd6
- 2.Qf8#
- 1...Sd8
- 2.Qf8#
- 1...Rxg4!
- 1...Rxf5+
- 1.Sd3?
- 1...Rxf5+
- 2.Sxf5#
- 1...Sxg4
- 2.Qxg6#
- 1...Sxf5
- 2.Sxf5#
- 1...Sxh8
- 2.Qf8#
- 1...Rh5
- 2.Qxg6#
- 1...Sd1
- 2.Qxg6#
- 1...Sf1
- 2.Qxg6#
- 1...Sg2
- 2.Qxg6#
- 1...Sc4
- 2.Qxg6#
- 1...Sd5
- 2.Qxg6#
- 1...Se5
- 2.Qf8#
- 1...Sd6
- 2.Qf8#
- 1...Sd8
- 2.Qf8#
- 1...Rxg4!
- 1...Rxf5+
- 1.Sh3?
- 1...Rxf5+
- 2.Sxf5#
- 1...Sxg4
- 2.Qxg6#
- 1...Sxf5
- 2.Sxf5#
- 1...Sxh8
- 2.Qf8#
- 1...Rh5
- 2.Qxg6#
- 1...Sd1
- 2.Qxg6#
- 1...Sf1
- 2.Qxg6#
- 1...Sg2
- 2.Qxg6#
- 1...Sc4
- 2.Qxg6#
- 1...Sd5
- 2.Qxg6#
- 1...Se5
- 2.Qf8#
- 1...Sd6
- 2.Qf8#
- 1...Sd8
- 2.Qf8#
- 1...Rxg4!
- 1...Rxf5+
- 1.Sfe4?
- 1...Rxf5+
- 2.Sxf5#
- 1...Sxg4
- 2.Qxg6#
- 1...Sxf5
- 2.Sxf5#
- 1...Sxh8
- 2.Qf8#
- 1...Rh5
- 2.Qxg6#
- 1...Sd1
- 2.Qxg6#
- 1...Sf1
- 2.Qxg6#
- 1...Sg2
- 2.Qxg6#
- 1...Sc4
- 2.Qxg6#
- 1...Sd5
- 2.Qxg6#
- 1...Se5
- 2.Qf8#
- 1...Sd6
- 2.Qf8#
- 1...Sd8
- 2.Qf8#
- 1...Rxg4!
- 1...Rxf5+
- 1.Rg8?
- threat
- 2.Qg7#
- 1...Rxf5+
- 2.Sxf5#
- 1...Rxg4
- 2.Sxg4#
- 1...Sxf5
- 2.Sxf5#
- 1...Rh5!
- threat
- 1.Kb4?
- Keys
- 1.Kd4!
- 1...Rxg4+
- 2.Sxg4#
- 1...Sxf5+
- 2.Sxf5#
- 1...Rxf5
- 2.Sxf5#
- 1...Sxg4
- 2.Sxg4#
- 2.Qxg6#
- 1...Sxh8
- 2.Qf8#
- 1...Rh5
- 2.Qxg6#
- 1...Sd1
- 2.Qxg6#
- 1...Sf1
- 2.Qxg6#
- 1...Sg2
- 2.Qxg6#
- 1...Sc4
- 2.Qxg6#
- 1...Sd5
- 2.Qxg6#
- 1...Se5
- 2.Qf8#
- 1...Sd6
- 2.Qf8#
- 1...Sd8
- 2.Qf8#
- 1...Rxg4+
- 1.Kd4!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(c);N_PINP(F),P_SPINS(b),XP(D)::S(B),XR(c)
- R(c);CHECK,P_SPINS(b),XP(F)::S(C),XR(c)
- R(c);N_GUARD,P_SPINS(b)::QAR1(G),XP(d)
- S(b);P_SPINR(c)::QAR1(G),XP(d)
- S(b);N_PINP(F),P_SPINR(c)::QAR1(G),XP(d)
- S(b);P_SPINR(c),XP(F)::S(C),XS(b)
- S(f);N_PINP(F),OGATE::QAB(G)
- S(f);OGATE::QAB(G)
- S(f);OGATE,XR(H)::QAB(G)
- Tries
- Try
- K(E);N_SPINP(F),S_FLIGHT
- Vars
- R(c);CHECK,P_SPINS(b),XP(D)::S(B),XR(c)
- R(c);P_SPINS(b),XP(F)::S(C),XR(c)
- S(b);P_SPINR(c),XP(F)::S(C),XS(b)
- S(f);OGATE,XR(H)::QAB(G)
- R(c);N_GUARD,P_SPINS(b)::QAR1(G),XP(d)
- S(b);P_SPINR(c)::QAR1(G),XP(d)
- S(f);OGATE::QAB(G)
- Refutation
- S(b);CHECK,P_SPINR(c)
- Try
- K(E);P-FLIGHT
- Vars
- R(c);CHECK,P_SPINS(b),XP(F)::S(C),XR(c)
- R(c);N_PINP(F),P_SPINS(b),XP(D)::S(B),XR(c)
- S(b);P_SPINR(c),XP(F)::S(C),XS(b)
- S(f);OGATE,XR(H)::QAB(G)
- R(c);N_GUARD,P_SPINS(b)::QAR1(G),XP(d)
- S(b);P_SPINR(c)::QAR1(G),XP(d)
- S(b);N_PINP(F),P_SPINR(c)::QAR1(G),XP(d)
- S(f);N_PINP(F),OGATE::QAB(G)
- S(f);OGATE::QAB(G)
- Refutation
- S(f);CHECK
- Try
- S(B);
- Vars
- R(c);CHECK,P_SPINS(b),XP(F)::S(C),XR(c)
- S(b);P_SPINR(c),XP(D)::QAR1(G),XP(d)
- S(b);P_SPINR(c),XP(F)::S(C),XS(b)
- S(f);OGATE,XR(H)::QAB(G)
- R(c);N_GUARD,P_SPINS(b)::QAR1(G),XP(d)
- S(b);P_SPINR(c)::QAR1(G),XP(d)
- S(b);N_PINP(F),P_SPINR(c)::QAR1(G),XP(d)
- S(f);N_PINP(F),OGATE::QAB(G)
- S(f);OGATE::QAB(G)
- Refutation
- R(c);N_PINP(F),P_SPINS(b),XP(D)
- Try
- S(B);
- Vars
- R(c);CHECK,P_SPINS(b),XP(F)::S(C),XR(c)
- S(b);P_SPINR(c),XP(D)::QAR1(G),XP(d)
- S(b);P_SPINR(c),XP(F)::S(C),XS(b)
- S(f);OGATE,XR(H)::QAB(G)
- R(c);N_GUARD,P_SPINS(b)::QAR1(G),XP(d)
- S(b);P_SPINR(c)::QAR1(G),XP(d)
- S(b);N_PINP(F),P_SPINR(c)::QAR1(G),XP(d)
- S(f);N_PINP(F),OGATE::QAB(G)
- S(f);OGATE::QAB(G)
- Refutation
- R(c);N_PINP(F),P_SPINS(b),XP(D)
- Try
- S(B);
- Vars
- R(c);CHECK,P_SPINS(b),XP(F)::S(C),XR(c)
- S(b);P_SPINR(c),XP(D)::QAR1(G),XP(d)
- S(b);P_SPINR(c),XP(F)::S(C),XS(b)
- S(f);OGATE,XR(H)::QAB(G)
- R(c);N_GUARD,P_SPINS(b)::QAR1(G),XP(d)
- S(b);P_SPINR(c)::QAR1(G),XP(d)
- S(b);N_PINP(F),P_SPINR(c)::QAR1(G),XP(d)
- S(f);N_PINP(F),OGATE::QAB(G)
- S(f);OGATE::QAB(G)
- Refutation
- R(c);N_PINP(F),P_SPINS(b),XP(D)
- Try
- S(B);
- Vars
- R(c);CHECK,P_SPINS(b),XP(F)::S(C),XR(c)
- S(b);P_SPINR(c),XP(D)::QAR1(G),XP(d)
- S(b);P_SPINR(c),XP(F)::S(C),XS(b)
- S(f);OGATE,XR(H)::QAB(G)
- R(c);N_GUARD,P_SPINS(b)::QAR1(G),XP(d)
- S(b);P_SPINR(c)::QAR1(G),XP(d)
- S(b);N_PINP(F),P_SPINR(c)::QAR1(G),XP(d)
- S(f);N_PINP(F),OGATE::QAB(G)
- S(f);OGATE::QAB(G)
- Refutation
- R(c);N_PINP(F),P_SPINS(b),XP(D)
- Try
- R(H);
- Threat
- QAB1(G)
- Vars
- R(c);CHECK,P_SPINS(b),XP(F)::S(C),XR(c)
- R(c);N_PINP(F),P_SPINS(b),XP(D)::S(B),XR(c)
- S(b);P_SPINR(c),XP(F)::S(C),XS(b)
- Refutation
- R(c);P_SPINS(b)
- Try
- Actual
- K(E);N_SPINP(F),S_FLIGHT
- Vars
- R(c);CHECK,P_SPINS(b),XP(D)::S(B),XR(c)
- S(b);CHECK,P_SPINR(c),XP(F)::S(C),XS(b)
- R(c);P_SPINS(b),XP(F)::S(C),XR(c)
- S(f);OGATE,XR(H)::QAB(G)
- R(c);N_GUARD,P_SPINS(b)::QAR1(G),XP(d)
- S(b);P_SPINR(c)::QAR1(G),XP(d)
- S(f);OGATE::QAB(G)
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).