MESON Chess Problem Database
Problem Display
PID: 80402 (3N4/Q7/1nqn1rp1/b1k3p1/1R1Rp1P1/P1N1P3/2PKP3/8 w - - 0 1)
Drese, Gerardus Hendrikus
Limburgs Dagblad, 1935
#2
11 + 9
| 6426 | Probleemcomponisten V - G H Drese | 1947 |
SOLUTION
- SOUND
- Sets
- 1...Qa4
- 2.Sxa4#
- 2.Rd5#
- 1...Qb5
- 2.Rd5#
- 1...Qd5
- 2.Sa4#
- 2.Rxd5#
- 1...Qb7
- 2.Sa4#
- 1...Qd7
- 2.Rd5#
- 1...Qa8
- 2.Sa4#
- 1...Qe8
- 2.Rd5#
- 1...Qc7
- 2.Sa4#
- 2.Rd5#
- 2.Qxc7#
- 1...Qc8
- 2.Sa4#
- 2.Rd5#
- 1...Rf1
- 2.Se6#
- 1...Rf2
- 2.Se6#
- 1...Rf3
- 2.Se6#
- 1...Rf4
- 2.Se6#
- 1...Rf5
- 2.Se6#
- 1...Re6
- 2.Sxe6#
- 1...Rf7
- 2.Se6#
- 1...Rf8
- 2.Se6#
- 1...Bxb4
- 2.axb4#
- 1...Sc4+
- 2.Rbxc4#
- 1...Sb5
- 2.Sa4#
- 2.Rbc4#
- 1...Sf5
- 2.Rbc4#
- 1...Sb7
- 2.Rbc4#
- 1...Sf7
- 2.Rbc4#
- 1...Sc8
- 2.Rbc4#
- 1...Se8
- 2.Rbc4#
- 1...Qa4
- Tries
- 1.Kc1?
- 1...Bxb4
- 2.axb4#
- 1...Qa4
- 2.Sxa4#
- 2.Rd5#
- 1...Qb5
- 2.Rd5#
- 1...Qd5
- 2.Sa4#
- 2.Rxd5#
- 1...Qb7
- 2.Sa4#
- 1...Qd7
- 2.Rd5#
- 1...Qa8
- 2.Sa4#
- 1...Qe8
- 2.Rd5#
- 1...Qc7
- 2.Sa4#
- 2.Rd5#
- 2.Qxc7#
- 1...Qc8
- 2.Sa4#
- 2.Rd5#
- 1...Rf2
- 2.Se6#
- 1...Rf3
- 2.Se6#
- 1...Rf4
- 2.Se6#
- 1...Rf5
- 2.Se6#
- 1...Re6
- 2.Sxe6#
- 1...Rf7
- 2.Se6#
- 1...Rf8
- 2.Se6#
- 1...Sc4
- 2.Rbxc4#
- 1...Sb5
- 2.Sa4#
- 2.Rbc4#
- 1...Sf5
- 2.Rbc4#
- 1...Sb7
- 2.Rbc4#
- 1...Sf7
- 2.Rbc4#
- 1...Sc8
- 2.Rbc4#
- 1...Se8
- 2.Rbc4#
- 1...Rf1+!
- 1...Bxb4
- 1.Kd1?
- 1...Bxb4
- 2.axb4#
- 1...Qa4
- 2.Sxa4#
- 2.Rd5#
- 1...Qb5
- 2.Rd5#
- 1...Qd5
- 2.Sa4#
- 2.Rxd5#
- 1...Qb7
- 2.Sa4#
- 1...Qd7
- 2.Rd5#
- 1...Qa8
- 2.Sa4#
- 1...Qe8
- 2.Rd5#
- 1...Qc7
- 2.Sa4#
- 2.Rd5#
- 2.Qxc7#
- 1...Qc8
- 2.Sa4#
- 2.Rd5#
- 1...Rf2
- 2.Se6#
- 1...Rf3
- 2.Se6#
- 1...Rf4
- 2.Se6#
- 1...Rf5
- 2.Se6#
- 1...Re6
- 2.Sxe6#
- 1...Rf7
- 2.Se6#
- 1...Rf8
- 2.Se6#
- 1...Sc4
- 2.Rbxc4#
- 1...Sb5
- 2.Sa4#
- 2.Rbc4#
- 1...Sf5
- 2.Rbc4#
- 1...Sb7
- 2.Rbc4#
- 1...Sf7
- 2.Rbc4#
- 1...Sc8
- 2.Rbc4#
- 1...Se8
- 2.Rbc4#
- 1...Rf1+!
- 1...Bxb4
- 1.Ke1?
- 1...Bxb4
- 2.axb4#
- 1...Qa4
- 2.Sxa4#
- 2.Rd5#
- 1...Qb5
- 2.Rd5#
- 1...Qd5
- 2.Sa4#
- 2.Rxd5#
- 1...Qb7
- 2.Sa4#
- 1...Qd7
- 2.Rd5#
- 1...Qa8
- 2.Sa4#
- 1...Qe8
- 2.Rd5#
- 1...Qc7
- 2.Sa4#
- 2.Rd5#
- 2.Qxc7#
- 1...Qc8
- 2.Sa4#
- 2.Rd5#
- 1...Rf2
- 2.Se6#
- 1...Rf3
- 2.Se6#
- 1...Rf4
- 2.Se6#
- 1...Rf5
- 2.Se6#
- 1...Re6
- 2.Sxe6#
- 1...Rf7
- 2.Se6#
- 1...Rf8
- 2.Se6#
- 1...Sc4
- 2.Rbxc4#
- 1...Sb5
- 2.Sa4#
- 2.Rbc4#
- 1...Sf5
- 2.Rbc4#
- 1...Sb7
- 2.Rbc4#
- 1...Sf7
- 2.Rbc4#
- 1...Sc8
- 2.Rbc4#
- 1...Se8
- 2.Rbc4#
- 1...Rf1+!
- 1...Bxb4
- 1.Sb7+?
- 1...Sxb7
- 2.Rbc4#
- 1...Qxb7!
- 1...Sxb7
- 1.Qxb6+?
- 1...Qxb6
- 2.Sa4#
- 2.Rd5#
- 1...Bxb6!
- 1...Qxb6
- 1.Kc1?
- Keys
- 1.Qe7!
- 1...Sc4+
- 2.Rdxc4#
- 1...Bxb4
- 2.axb4#
- 1...Qa4
- 2.Sxe4#
- 1...Qb5
- 2.Sxe4#
- 2.Rxb5#
- 1...Qd5
- 2.Rb5#
- 1...Qb7
- 2.Rb5#
- 1...Qd7
- 2.Sxe4#
- 1...Qa8
- 2.Rb5#
- 1...Qe8
- 2.Sxe4#
- 1...Qc7
- 2.Sxe4#
- 2.Rb5#
- 2.Qxc7#
- 1...Qc8
- 2.Sxe4#
- 2.Rb5#
- 1...Rf1
- 2.Se6#
- 1...Rf2
- 2.Se6#
- 1...Rf3
- 2.Se6#
- 1...Rf4
- 2.Se6#
- 1...Rf5
- 2.Se6#
- 1...Re6
- 2.Sxe6#
- 1...Rf7
- 2.Se6#
- 1...Rf8
- 2.Se6#
- 1...Sa4
- 2.Rdc4#
- 1...Sd5
- 2.Sxe4#
- 2.Rdc4#
- 1...Sd7
- 2.Rdc4#
- 1...Sa8
- 2.Rdc4#
- 1...Sc8
- 2.Rdc4#
- 1...Sc4+
- 1.Qe7!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 4
- ADDED MATES = 7
- REMOVED MATES = 7
- Sets
- Q(f);N_GUARD::R1(H)
- Q(f);N_GUARD::S(E)
- R(h);N_GUARD::S(K)
- R(h);N_GUARD,P_PINP(C)::S(K)
- R(h);N_GUARD::S(K),XR(h)
- B(b);OGATE,P_PINS(E),XR(G)::P(D),XB(b)
- S(g);CHECK,N_GUARD::R1(G),XS(g)
- S(g);N_GUARD::R1(G)
- Tries
- Try
- K(B);S_FLIGHT
- Vars
- B(b);OGATE,XR(G)::P(D),XB(b)
- Q(f);N_GUARD::R1(H)
- Q(f);N_GUARD::S(E)
- R(h);N_GUARD::S(K)
- R(h);N_GUARD::S(K),XR(h)
- S(g);N_GUARD::R1(G),XS(g)
- S(g);N_GUARD::R1(G)
- Refutation
- R(h);CHECK
- Try
- K(B);P-FLIGHT
- Vars
- B(b);OGATE,XR(G)::P(D),XB(b)
- Q(f);N_GUARD::R1(H)
- Q(f);N_GUARD::S(E)
- R(h);N_GUARD::S(K)
- R(h);N_GUARD::S(K),XR(h)
- S(g);N_GUARD::R1(G),XS(g)
- S(g);N_GUARD::R1(G)
- Refutation
- R(h);CHECK
- Try
- K(B);S_FLIGHT
- Vars
- B(b);OGATE,P_PINS(E),XR(G)::P(D),XB(b)
- Q(f);N_GUARD::R1(H)
- Q(f);N_GUARD::S(E)
- R(h);N_GUARD::S(K)
- R(h);N_GUARD::S(K),XR(h)
- S(g);N_GUARD::R1(G),XS(g)
- S(g);N_GUARD::R1(G)
- Refutation
- R(h);CHECK
- Try
- S(K);CHECK
- Vars
- S(g);XS(K)::R1(G)
- Refutation
- Q(f);XS(K)
- Try
- Q(J);CHECK,XS(e)
- Refutation
- B(b);XQ(J)
- Try
- Actual
- Q(J);N_PINS(e),P_PINS(g)
- Vars
- S(e);CHECK,N_GUARD::R1(H),XS(e)
- B(b);OGATE,P_PINS(E),XR(G)::P(D),XB(b)
- Q(f);N_GUARD::S(E),XP(a)
- Q(f);N_GUARD,P_PINR(H)::R1(G)
- Q(f);N_GUARD::R1(G)
- R(h);N_GUARD::S(K)
- R(h);N_GUARD,P_PINP(C)::S(K)
- R(h);N_GUARD::S(K),XR(h)
- S(e);N_GUARD::R1(H)
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).