MESON Chess Problem Database
Problem Display
PID: 59219 (5RQ1/2nN4/q6p/2NppP2/3n1kPP/1p5K/2pP2P1/b2bR3 w - - 0 1)
Kennard, Walter Irving
1st Highly Comm., Brisbane Courier, 1921-1922
#2
11 + 11
SOLUTION
- SOUND
- Sets
- 1...Qd3+
- 2.Sxd3#
- 1...Qb7
- 2.Sd3#
- 1...Qc8
- 2.Sd3#
- 1...Qa2
- 2.Sd3#
- 1...Qa3
- 2.Sd3#
- 1...Qa4
- 2.Sd3#
- 1...Qa5
- 2.Sd3#
- 1...Qb6
- 2.Sd3#
- 1...Qc6
- 2.Sd3#
- 1...Qd6
- 2.Sd3#
- 1...Qe6
- 2.Sd3#
- 1...Qf6
- 2.Sd3#
- 1...Qg6
- 2.Sd3#
- 1...Qa7
- 2.Sd3#
- 1...Qa8
- 2.Sd3#
- 1...Bf3
- 2.g3#
- 1...Bxg4+
- 2.Qxg4#
- 1...Se2
- 2.Rf1#
- 1...Sf3
- 2.g3#
- 1...Sdb5
- 2.Sd3#
- 1...Sxf5
- 2.Rxf5#
- 1...Sde6
- 2.fxe6#
- 1...Scb5
- 2.Sd3#
- 1...h5
- 2.Qg5#
- 1...Qd3+
- Tries
- 1.Sf6?
- threat
- 2.Sh5#
- 1...Qd3+
- 2.Sxd3#
- 1...Bxg4+
- 2.Qxg4#
- 1...Qxf6
- 2.Sd3#
- 1...h5
- 2.Sxh5#
- 2.Qg5#
- 1...e4!
- threat
- 1.Rf1+?
- 1...Bf3
- 2.g3#
- 1...Sf3
- 2.g3#
- 1...Qxf1!
- 1...Bf3
- 1.Re3?
- threat
- 2.g3#
- 1...Bxg4+
- 2.Qxg4#
- 1...Se2
- 2.Rf3#
- 1...Qf1!
- threat
- 1.Qxd5?
- threat
- 2.Re4#
- 2.Qe4#
- 2.Qxe5#
- 2.g3#
- 1...Qd3+
- 2.Sxd3#
- 1...Sxf5
- 2.Re4#
- 2.Rxf5#
- 2.Qe4#
- 2.g3#
- 1...Sxd5
- 2.Re4#
- 1...Qf1
- 2.Re4#
- 2.Qe4#
- 2.Qxe5#
- 1...Qe2
- 2.g3#
- 1...Qb7
- 2.Sd3#
- 2.Re4#
- 2.Qxe5#
- 2.g3#
- 1...Qc6
- 2.Sd3#
- 2.Re4#
- 2.Qxe5#
- 2.g3#
- 1...Qd6
- 2.Sd3#
- 2.Re4#
- 2.Qe4#
- 2.g3#
- 1...Qe6
- 2.Sd3#
- 2.Re4#
- 2.Qe4#
- 2.g3#
- 1...Qf6
- 2.Sd3#
- 2.Re4#
- 2.Qe4#
- 2.g3#
- 1...Qa8
- 2.Sd3#
- 2.Re4#
- 2.Qxe5#
- 2.g3#
- 1...Be2
- 2.Qe4#
- 2.Qxe5#
- 2.g3#
- 1...Bf3
- 2.Qxe5#
- 2.g3#
- 1...Se2
- 2.Rf1#
- 2.Qf3#
- 2.Qe4#
- 1...Sf3
- 2.Re4#
- 2.Qe4#
- 2.g3#
- 1...Sdb5
- 2.Sd3#
- 2.Re4#
- 2.Qe4#
- 2.g3#
- 1...Sc6
- 2.Re4#
- 2.Qe4#
- 2.g3#
- 1...Sde6
- 2.Re4#
- 2.Qe4#
- 2.g3#
- 2.fxe6#
- 1...e4
- 2.Rxe4#
- 2.Qxe4#
- 2.Qe5#
- 1...Bxg4+!
- threat
- 1.Qh8?
- threat
- 2.Qxe5#
- 1...Qd3+
- 2.Sxd3#
- 1...Sxf5
- 2.Rxf5#
- 1...Qe2
- 2.Qxh6#
- 1...Qd6
- 2.Sd3#
- 1...Qe6
- 2.Sd3#
- 1...Qf6
- 2.Sd3#
- 1...Se2
- 2.Rf1#
- 1...Sf3
- 2.g3#
- 1...Sdb5
- 2.Sd3#
- 1...Sc6
- 2.Qxh6#
- 1...Sde6
- 2.fxe6#
- 1...e4
- 2.Qe5#
- 1...Bxg4+!
- threat
- 1.Sf6?
- Keys
- 1.Qg7!
- threat
- 2.Qxe5#
- 1...Qd3+
- 2.Sxd3#
- 1...Bxg4+
- 2.Qxg4#
- 1...Sxf5
- 2.Rxf5#
- 1...Qe2
- 2.Qxh6#
- 1...Qd6
- 2.Sd3#
- 1...Qe6
- 2.Sd3#
- 1...Qf6
- 2.Sd3#
- 1...Se2
- 2.Rf1#
- 1...Sf3
- 2.g3#
- 1...Sdb5
- 2.Sd3#
- 1...Sc6
- 2.Qxh6#
- 1...Sde6
- 2.fxe6#
- 1...e4
- 2.Qe5#
- threat
- 1.Qg7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 14
- Sets
- Q(i);CHECK,N_GUARD::S(G),XQ(i)
- Q(i);N_GUARD::S(G)
- B(b);SBLOCK::P(C)
- B(b);CHECK,OGATE,XP(E)::QAR1(K),XB(b)
- S(e);N_GUARD,S_CUTB(b),S_CUTQ(i)::R(A)
- S(e);SBLOCK::P(C)
- S(e);S_CUTQ(i)::S(G)
- S(e);OGATE,P_SPINS(e),XP(H)::R1(J),XS(e)
- S(e);OGATE::R(J)+P(H),XS(e)
- S(k);S_CUTQ(i)::S(G)
- P(j);N_GUARD::QAB1(K)
- Tries
- Try
- S(I);
- Threat
- S(I)
- Vars
- Q(i);CHECK,N_GUARD::S(G),XQ(i)
- B(b);CHECK,OGATE,XP(E)::QAR1(K),XB(b)
- Q(i);N_GUARD,XS(I)::S(G)
- Refutation
- P(h);
- Try
- R(A);CHECK
- Vars
- B(b);P_SPINB(b)::P(C)
- S(e);P_SPINS(e)::P(C)
- Refutation
- Q(i);P_PINP(C),XR(A)
- Try
- R(A);
- Threat
- P(C)
- Vars
- B(b);CHECK,OGATE,XP(E)::QAR1(K),XB(b)
- S(e);N_GUARD,S_CUTB(b)::R1(A)
- Refutation
- Q(i);P_PINP(C)
- Try
- Q(K);XP(g)
- Threat
- DUALS(4)
- Vars
- Q(i);CHECK,N_GUARD::S(G),XQ(i)
- S(k);XQ(K)::R1(A)
- Q(i);::P(C)
- Refutation
- B(b);CHECK,XP(E)
- Try
- Q(K);
- Threat
- QAB1(K),XP(h)
- Vars
- Q(i);CHECK,N_GUARD::S(G),XQ(i)
- S(e);OGATE,P_SPINS(e),XP(H)::R1(J),XS(e)
- Q(i);N_GUARD::QAB(K),XP(j)
- Q(i);N_GUARD::S(G)
- S(e);N_GUARD,S_CUTB(b),S_CUTQ(i)::R(A)
- S(e);SBLOCK::P(C)
- S(e);S_CUTQ(i)::S(G)
- S(e);S_CUTQ(i)::QAB(K),XP(j)
- S(e);OGATE::R(J)+P(H),XS(e)
- P(h);::QAB1(K)
- Refutation
- B(b);CHECK,XP(E)
- Try
- Actual
- Q(K);
- Threat
- QAB1(K),XP(h)
- Vars
- Q(i);CHECK,N_GUARD::S(G),XQ(i)
- B(b);CHECK,OGATE,XP(E)::QAR1(K),XB(b)
- S(e);OGATE,P_SPINS(e),XP(H)::R1(J),XS(e)
- Q(i);N_GUARD::QAB(K),XP(j)
- Q(i);N_GUARD::S(G)
- S(e);N_GUARD,S_CUTB(b),S_CUTQ(i)::R(A)
- S(e);SBLOCK::P(C)
- S(e);S_CUTQ(i)::S(G)
- S(e);S_CUTQ(i)::QAB(K),XP(j)
- S(e);OGATE::R(J)+P(H),XS(e)
- P(h);::QAB1(K)
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).