MESON Chess Problem Database
Problem Display
PID: 144043 (8/8/2N1B3/7b/4k2r/4PnQP/2P5/2K2R2 w - - 0 1)
Restad, Birger
Magyar Sakkvilag, 1930
#2
8 + 4
SOLUTION
- SOUND
- Sets
- 1...Kxe3
- 2.Re1#
- 1...Rxh3
- 2.Qf4#
- 1...Rf4
- 2.Qxf4#
- 1...Rg4
- 2.Qxf3#
- 1...Bg4
- 2.Qf4#
- 1...Bg6
- 2.Qxf3#
- 1...Bf7
- 2.Qxf3#
- 1...Be8
- 2.Qxf3#
- 1...Se1
- 2.Qe5#
- 1...Sg1
- 2.Qe5#
- 1...Sd2
- 2.Qe5#
- 1...Sh2
- 2.Qe5#
- 1...Sd4
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sg5
- 2.Qe5#
- 1...Kxe3
- Tries
- 1.Kb2?
- 1...Rxh3
- 2.Qf4#
- 1...Rf4
- 2.Qxf4#
- 1...Rg4
- 2.Qxf3#
- 1...Bg4
- 2.Qf4#
- 1...Bg6
- 2.Qxf3#
- 1...Bf7
- 2.Qxf3#
- 1...Be8
- 2.Qxf3#
- 1...Se1
- 2.Qe5#
- 1...Sg1
- 2.Qe5#
- 1...Sd2
- 2.Qe5#
- 1...Sh2
- 2.Qe5#
- 1...Sd4
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sg5
- 2.Qe5#
- 1...Kxe3!
- 1...Rxh3
- 1.Ba2?
- 1...Kxe3
- 2.Re1#
- 1...Rxh3
- 2.Qf4#
- 1...Rg4
- 2.Qxf3#
- 1...Rf4
- 2.Qxf4#
- 1...Bg4
- 2.Qf4#
- 1...Bg6
- 2.Qxf3#
- 1...Bf7
- 2.Qxf3#
- 1...Be8
- 2.Qxf3#
- 1...Se1
- 2.Qe5#
- 1...Sg1
- 2.Qe5#
- 1...Sd2
- 2.Qe5#
- 1...Sh2
- 2.Qe5#
- 1...Sd4
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sg5
- 2.Qe5#
- 1...Kf5!
- 1...Kxe3
- 1.Bb3?
- 1...Kxe3
- 2.Re1#
- 1...Rxh3
- 2.Qf4#
- 1...Rg4
- 2.Qxf3#
- 1...Rf4
- 2.Qxf4#
- 1...Bg4
- 2.Qf4#
- 1...Bg6
- 2.Qxf3#
- 1...Bf7
- 2.Qxf3#
- 1...Be8
- 2.Qxf3#
- 1...Se1
- 2.Qe5#
- 1...Sg1
- 2.Qe5#
- 1...Sd2
- 2.Qe5#
- 1...Sh2
- 2.Qe5#
- 1...Sd4
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sg5
- 2.Qe5#
- 1...Kf5!
- 1...Kxe3
- 1.Bc4?
- 1...Kxe3
- 2.Re1#
- 1...Rxh3
- 2.Qf4#
- 1...Rg4
- 2.Qxf3#
- 1...Rf4
- 2.Qxf4#
- 1...Bg4
- 2.Qf4#
- 1...Bg6
- 2.Qxf3#
- 1...Bf7
- 2.Qxf3#
- 1...Be8
- 2.Qxf3#
- 1...Se1
- 2.Qe5#
- 1...Sg1
- 2.Qe5#
- 1...Sd2
- 2.Qe5#
- 1...Sh2
- 2.Qe5#
- 1...Sd4
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sg5
- 2.Qe5#
- 1...Kf5!
- 1...Kxe3
- 1.Bg8?
- 1...Kxe3
- 2.Re1#
- 1...Rxh3
- 2.Qf4#
- 1...Bf7
- 2.Qxf3#
- 1...Rg4
- 2.Qxf3#
- 1...Rf4
- 2.Qxf4#
- 1...Bg4
- 2.Qf4#
- 1...Bg6
- 2.Qxf3#
- 1...Be8
- 2.Qxf3#
- 1...Se1
- 2.Qe5#
- 1...Sg1
- 2.Qe5#
- 1...Sd2
- 2.Qe5#
- 1...Sh2
- 2.Qe5#
- 1...Sd4
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sg5
- 2.Qe5#
- 1...Kf5!
- 1...Kxe3
- 1.Rf2?
- 1...Rxh3
- 2.Qf4#
- 1...Rg4
- 2.Qxf3#
- 1...Rf4
- 2.Qxf4#
- 1...Bg4
- 2.Qf4#
- 1...Bg6
- 2.Qxf3#
- 1...Bf7
- 2.Qxf3#
- 1...Be8
- 2.Qxf3#
- 1...Se1
- 2.Qe5#
- 1...Sg1
- 2.Qe5#
- 1...Sd2
- 2.Qe5#
- 1...Sh2
- 2.Qe5#
- 1...Sd4
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sg5
- 2.Qe5#
- 1...Kxe3!
- 1...Rxh3
- 1.Qd6?
- threat
- 2.Qd3#
- 1...Se1
- 2.Qe5#
- 2.Qd4#
- 1...Sd4
- 2.Qe5#
- 2.Qxd4#
- 1...Se5
- 2.Qxe5#
- 2.Qd4#
- 1...Kxe3!
- threat
- 1.Kb2?
- Keys
- 1.Bf7!
- 1...Kxe3
- 2.Re1#
- 1...Kf5
- 2.Qe5#
- 1...Rxh3
- 2.Qf4#
- 1...Bxf7
- 2.Qxf3#
- 1...Rg4
- 2.Qxf3#
- 1...Rf4
- 2.Qxf4#
- 1...Bg4
- 2.Qf4#
- 1...Bg6
- 2.Qxf3#
- 1...Se1
- 2.Qe5#
- 1...Sg1
- 2.Qe5#
- 1...Sd2
- 2.Qe5#
- 1...Sh2
- 2.Qe5#
- 1...Sd4
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sg5
- 2.Qe5#
- 1...Kxe3
- 1.Bf7!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- K(b);OGATEB,P-FLIGHT,P_SPINS(a),XP(D)::R(B)
- R(c);N_GUARD,XP(F)::QAR1(E)
- R(c);N_GUARD::QAR1(E),XR(c)
- R(c);S_CUTB(d)::QAB1(E),XS(a)
- B(d);S_CUTR(c)::QAR1(E)
- B(d);N_GUARD::QAB1(E),XS(a)
- S(a);N_GUARD::QAR1(E)
- S(a);N_GUARD::QAR1(E),XS(a)
- Tries
- Try
- K(A);S_FLIGHT
- Vars
- R(c);N_GUARD,XP(F)::QAR1(E)
- R(c);N_GUARD::QAR1(E),XR(c)
- R(c);S_CUTB(d)::QAB1(E),XS(a)
- B(d);S_CUTR(c)::QAR1(E)
- B(d);N_GUARD::QAB1(E),XS(a)
- S(a);N_GUARD::QAR1(E)
- S(a);N_GUARD::QAR1(E),XS(a)
- Refutation
- K(b);P-FLIGHT,P_SPINS(a),XP(D)
- Try
- B(H);
- Vars
- K(b);OGATEB,P-FLIGHT,P_SPINS(a),XP(D)::R(B)
- R(c);N_GUARD,XP(F)::QAR1(E)
- R(c);S_CUTB(d)::QAB1(E),XS(a)
- R(c);N_GUARD::QAR1(E),XR(c)
- B(d);S_CUTR(c)::QAR1(E)
- B(d);N_GUARD::QAB1(E),XS(a)
- S(a);N_GUARD::QAR1(E)
- S(a);N_GUARD::QAR1(E),XS(a)
- Refutation
- K(b);P_SPINS(a),S_FLIGHT
- Try
- B(H);
- Vars
- K(b);OGATEB,P-FLIGHT,P_SPINS(a),XP(D)::R(B)
- R(c);N_GUARD,XP(F)::QAR1(E)
- R(c);S_CUTB(d)::QAB1(E),XS(a)
- R(c);N_GUARD::QAR1(E),XR(c)
- B(d);S_CUTR(c)::QAR1(E)
- B(d);N_GUARD::QAB1(E),XS(a)
- S(a);N_GUARD::QAR1(E)
- S(a);N_GUARD::QAR1(E),XS(a)
- Refutation
- K(b);P_SPINS(a),S_FLIGHT
- Try
- B(H);
- Vars
- K(b);OGATEB,P-FLIGHT,P_SPINS(a),XP(D)::R(B)
- R(c);N_GUARD,XP(F)::QAR1(E)
- R(c);S_CUTB(d)::QAB1(E),XS(a)
- R(c);N_GUARD::QAR1(E),XR(c)
- B(d);S_CUTR(c)::QAR1(E)
- B(d);N_GUARD::QAB1(E),XS(a)
- S(a);N_GUARD::QAR1(E)
- S(a);N_GUARD::QAR1(E),XS(a)
- Refutation
- K(b);P_SPINS(a),S_FLIGHT
- Try
- B(H);
- Vars
- K(b);OGATEB,P-FLIGHT,P_SPINS(a),XP(D)::R(B)
- R(c);N_GUARD,XP(F)::QAR1(E)
- B(d);N_GUARD::QAB1(E),XS(a)
- R(c);S_CUTB(d)::QAB1(E),XS(a)
- R(c);N_GUARD::QAR1(E),XR(c)
- B(d);S_CUTR(c)::QAR1(E)
- S(a);N_GUARD::QAR1(E)
- S(a);N_GUARD::QAR1(E),XS(a)
- Refutation
- K(b);P_SPINS(a),S_FLIGHT
- Try
- R(B);
- Vars
- R(c);N_GUARD,XP(F)::QAR1(E)
- R(c);S_CUTB(d)::QAB1(E),XS(a)
- R(c);N_GUARD::QAR1(E),XR(c)
- B(d);S_CUTR(c)::QAR1(E)
- B(d);N_GUARD::QAB1(E),XS(a)
- S(a);N_GUARD::QAR1(E)
- S(a);N_GUARD::QAR1(E),XS(a)
- Refutation
- K(b);P-FLIGHT,P_SPINS(a),XP(D)
- Try
- Q(E);
- Threat
- QAB1(E)
- Refutation
- K(b);P-FLIGHT,XP(D)
- Try
- Actual
- B(H);
- Vars
- K(b);OGATEB,P-FLIGHT,P_SPINS(a),XP(D)::R(B)
- K(b);P_SPINS(a),S_FLIGHT::QAR1(E)
- R(c);N_GUARD,XP(F)::QAR1(E)
- B(d);N_GUARD,XB(H)::QAB1(E),XS(a)
- R(c);S_CUTB(d)::QAB1(E),XS(a)
- R(c);N_GUARD::QAR1(E),XR(c)
- B(d);S_CUTR(c)::QAR1(E)
- B(d);N_GUARD::QAB1(E),XS(a)
- S(a);N_GUARD::QAR1(E)
- S(a);N_GUARD::QAR1(E),XS(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).