MESON Chess Problem Database
Problem Display
PID: 227822 (8/8/2p5/p1K5/k2p2R1/3P4/1BNN4/6qR w - - 0 1)
Malpas, Louis
3/4 HM., Magyar Sakkvilag, 1926
#2
7 + 5
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qf2
- 2.Ra1#
- 1...Qh2
- 2.Ra1#
- 2.Rxd4#
- 1...Qe3
- 2.Ra1#
- 1...Qa1
- 2.Rxa1#
- 2.Rxd4#
- 1...Qb1
- 2.Rxd4#
- 1...Qc1
- 2.Rxd4#
- 1...Qd1
- 2.Rxd4#
- 1...Qe1
- 2.Rxd4#
- 1...Qf1
- 2.Rxd4#
- 1...Qxh1
- 2.Rxd4#
- 1...Qg2
- 2.Ra1#
- 2.Rxd4#
- 1...Qg3
- 2.Ra1#
- 2.Rxd4#
- 1...Qxg4
- 2.Ra1#
- 1...Qf2
- Tries
- 1.Kb6?
- 1...Qxh1
- 2.Rxd4#
- 1...Qxg4
- 2.Ra1#
- 1...Qf2
- 2.Ra1#
- 1...Qh2
- 2.Ra1#
- 2.Rxd4#
- 1...Qe3
- 2.Ra1#
- 1...Qa1
- 2.Rxa1#
- 2.Rxd4#
- 1...Qb1
- 2.Rxd4#
- 1...Qc1
- 2.Rxd4#
- 1...Qd1
- 2.Rxd4#
- 1...Qe1
- 2.Rxd4#
- 1...Qf1
- 2.Rxd4#
- 1...Qg2
- 2.Ra1#
- 2.Rxd4#
- 1...Qg3
- 2.Ra1#
- 2.Rxd4#
- 1...c5!
- 1...Qxh1
- 1.Se3?
- threat
- 2.Rxd4#
- 1...Qxe3
- 2.Ra1#
- 1...Qxg4
- 2.Ra1#
- 1...Qc1+!
- threat
- 1.Bc3?
- 1...Qxh1
- 2.Rxd4#
- 1...Qxg4
- 2.Ra1#
- 1...Qf2
- 2.Ra1#
- 1...Qh2
- 2.Ra1#
- 2.Rxd4#
- 1...Qe3
- 2.Ra1#
- 1...Qa1
- 2.Rxa1#
- 2.Rxd4#
- 1...Qc1
- 2.Rxd4#
- 1...Qd1
- 2.Rxd4#
- 1...Qe1
- 2.Rxd4#
- 1...Qf1
- 2.Rxd4#
- 1...Qg2
- 2.Ra1#
- 2.Rxd4#
- 1...Qg3
- 2.Ra1#
- 2.Rxd4#
- 1...Qb1!
- 1...Qxh1
- 1.Kb6?
- Keys
- 1.Sxd4!
- 1...Qxd4+
- 2.Rxd4#
- 1...Qc1+
- 2.Sc2#
- 1...Qxh1
- 2.S4f3#
- 1...Qxg4
- 2.Ra1#
- 1...Qf2
- 2.Ra1#
- 1...Qh2
- 2.Ra1#
- 1...Qe3
- 2.Ra1#
- 1...Qa1
- 2.Sc2#
- 2.Se2#
- 2.S4b3#
- 2.S4f3#
- 2.Sb5#
- 2.Sf5#
- 2.Sxc6#
- 2.Se6#
- 2.Rxa1#
- 1...Qb1
- 2.Sc2#
- 2.Se2#
- 2.S4b3#
- 2.S4f3#
- 2.Sb5#
- 2.Sf5#
- 2.Sxc6#
- 2.Se6#
- 1...Qd1
- 2.Se2#
- 2.S4f3#
- 1...Qe1
- 2.Se2#
- 1...Qf1
- 2.S4f3#
- 1...Qg2
- 2.Ra1#
- 1...Qg3
- 2.Ra1#
- 1...Qxd4+
- 1.Sxd4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 4
- ADDED MATES = 4
- REMOVED MATES = 2
- Sets
- Q(a);OGATE::R(A)
- Q(a);N_GUARD::R(F),XP(c)
- Q(a);N_GUARD,P_PINS(C)::R(F),XP(c)
- Q(a);N_GUARD,XR(A)::R(F),XP(c)
- Q(a);N_SPINP(c),OGATE,XR(F)::R(A)
- Tries
- Try
- K(G);S_FLIGHT
- Vars
- Q(a);N_GUARD,XR(A)::R(F),XP(c)
- Q(a);N_SPINP(c),OGATE,XR(F)::R(A)
- Q(a);OGATE::R(A)
- Q(a);N_GUARD,P_PINB(B)::R(F),XP(c)
- Q(a);N_GUARD::R(F),XP(c)
- Refutation
- P(e);
- Try
- S(C);
- Threat
- R(F),XP(c)
- Vars
- Q(a);OGATE,XS(C)::R(A)
- Q(a);N_SPINP(c),OGATE,XR(F)::R(A)
- Refutation
- Q(a);CHECK
- Try
- B(B);
- Vars
- Q(a);N_GUARD,XR(A)::R(F),XP(c)
- Q(a);N_SPINP(c),OGATE,XR(F)::R(A)
- Q(a);OGATE::R(A)
- Q(a);N_GUARD::R(F),XP(c)
- Refutation
- Q(a);
- Try
- Actual
- S(C);P_SPINS(C),XP(c)
- Vars
- Q(a);CHECK,OGATE,P_SPINQ(a),XS(C)::R(F),XQ(a)
- Q(a);CHECK,N_PINS(C)::R(F)+S(C)
- Q(a);N_PINS(C),XR(A)::R(F)+S(C)
- Q(a);N_PINS(C),OGATE,XR(F)::R(A)
- Q(a);OGATE::R(A)
- Q(a);N_PINS(C),OGATE,SBLOCK::R(A)
- Q(a);N_PINS(C)::R(F)+S(C)
- Q(a);N_PINS(C),OGATE::R(A)
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).