MESON Chess Problem Database
Problem Display
PID: 48291 (8/8/5pn1/p1R2N2/Pb2k1p1/2r1p1B1/1QP1K3/5R2 w - - 0 1)
Howard, Kenneth Samuel
American Chess Bulletin, 1938
#2
8 + 8
| 5089 | The Enjoyment of Chess Problems | 1943 |
| 5064 | 100 Years of the American Two-move Chess Problem | 1962 |
SOLUTION
- SOUND
- Sets
- 1...Rxc2+
- 2.Qxc2#
- 1...Ra3
- 2.Sd6#
- 2.Qd4#
- 1...Rb3
- 2.Sd6#
- 2.Qd4#
- 1...Rd3
- 2.cxd3#
- 1...Rc4
- 2.Sd6#
- 1...Rxc5
- 2.Qd4#
- 1...Ba3
- 2.Qb7#
- 1...Bxc5
- 2.Qb7#
- 1...Sf4+
- 2.Rxf4#
- 1...Sh4
- 2.Rf4#
- 1...Se5
- 2.Rf4#
- 1...Se7
- 2.Rf4#
- 1...Sf8
- 2.Rf4#
- 1...Sh8
- 2.Rf4#
- 1...Rxc2+
- Tries
- 1.Bh2?
- 1...Rxc2+
- 2.Qxc2#
- 1...Sf4+
- 2.Rxf4#
- 1...Rxc5
- 2.Qd4#
- 1...Bxc5
- 2.Qb7#
- 1...Ra3
- 2.Sg3#
- 2.Sd6#
- 2.Qd4#
- 1...Rb3
- 2.Sg3#
- 2.Sd6#
- 2.Qd4#
- 1...Rd3
- 2.Sg3#
- 2.cxd3#
- 1...Rc4
- 2.Sg3#
- 2.Sd6#
- 1...Ba3
- 2.Qb7#
- 1...Sh4
- 2.Rf4#
- 1...Se5
- 2.Rf4#
- 1...Se7
- 2.Rf4#
- 1...Sf8
- 2.Rf4#
- 1...Sh8
- 2.Rf4#
- 1...g3!
- 1...Rxc2+
- 1.Rf2?
- 1...Rxc2+
- 2.Qxc2#
- 1...Sf4+
- 2.Rxf4#
- 1...Rxc5
- 2.Qd4#
- 1...Bxc5
- 2.Qb7#
- 1...Ra3
- 2.Sd6#
- 2.Qd4#
- 1...Rb3
- 2.Sd6#
- 2.Qd4#
- 1...Rd3
- 2.cxd3#
- 1...Rc4
- 2.Sd6#
- 1...Ba3
- 2.Qb7#
- 1...Sh4
- 2.Rf4#
- 1...Se5
- 2.Rf4#
- 1...Se7
- 2.Rf4#
- 1...Sf8
- 2.Rf4#
- 1...Sh8
- 2.Rf4#
- 1...exf2!
- 1...Rxc2+
- 1.Rf3?
- 1...Rxc2+
- 2.Qxc2#
- 1...Sf4+
- 2.Rxf4#
- 1...Rxc5
- 2.Qd4#
- 1...Bxc5
- 2.Qb7#
- 1...Ra3
- 2.Sd6#
- 2.Qd4#
- 1...Rb3
- 2.Sd6#
- 2.Qd4#
- 1...Rd3
- 2.cxd3#
- 1...Rc4
- 2.Sd6#
- 2.Rxe3#
- 1...Ba3
- 2.Qb7#
- 1...Sh4
- 2.Rf4#
- 1...Se5
- 2.Rf4#
- 1...Se7
- 2.Rf4#
- 1...Sf8
- 2.Rf4#
- 1...Sh8
- 2.Rf4#
- 1...gxf3+!
- 1...Rxc2+
- 1.Qxc3?
- threat
- 2.Sd6#
- 2.Qd4#
- 2.Qd3#
- 2.Qxe3#
- 2.Qc4#
- 1...Sf4+
- 2.Rxf4#
- 1...Bxc5
- 2.Qd3#
- 1...Se5
- 2.Sd6#
- 2.Rf4#
- 2.Qd4#
- 2.Qxe3#
- 1...Bxc3!
- threat
- 1.Qb3?
- threat
- 2.Qd5#
- 1...Rxc2+
- 2.Qxc2#
- 1...Sf4+
- 2.Rxf4#
- 1...Rxc5
- 2.Qd3#
- 1...Bxc5
- 2.Qb7#
- 1...Rd3
- 2.Qxd3#
- 2.cxd3#
- 1...Rc4
- 2.Qxc4#
- 2.Qd3#
- 2.Qxe3#
- 1...Se7
- 2.Rf4#
- 2.Qe6#
- 1...Rxb3!
- threat
- 1.Qxb4+?
- 1...Rc4
- 2.Qxc4#
- 2.Qb7#
- 1...axb4!
- 1...Rc4
- 1.Bh2?
- Keys
- 1.Qb1!
- 1...Rxc2+
- 2.Qxc2#
- 1...Sf4+
- 2.Rxf4#
- 1...Rxc5
- 2.c4#
- 1...Bxc5
- 2.Qb7#
- 1...Ra3
- 2.c3#
- 1...Rb3
- 2.cxb3#
- 1...Rd3
- 2.cxd3#
- 1...Rc4
- 2.c3#
- 1...Ba3
- 2.Qb7#
- 1...Sh4
- 2.Rf4#
- 1...Se5
- 2.Rf4#
- 1...Se7
- 2.Rf4#
- 1...Sf8
- 2.Rf4#
- 1...Sh8
- 2.Rf4#
- 1...Rxc2+
- 1.Qb1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- R(a);CHECK,OGATE,XP(C)::QAB(B),XR(a)
- R(a);OGATE::P(C),XR(a)
- R(a);::S(H)
- R(a);OGATE,XR(G)::QAR1(B)
- B(c);OGATE::QAB(B)
- B(c);OGATE,XR(G)::QAB(B)
- S(h);CHECK,N_GUARD::R1(A),XS(h)
- S(h);N_GUARD::R1(A)
- Tries
- Try
- B(E);
- Vars
- R(a);CHECK,OGATE,XP(C)::QAB(B),XR(a)
- S(h);CHECK,N_GUARD::R1(A),XS(h)
- R(a);OGATE,XR(G)::QAR1(B)
- B(c);OGATE,XR(G)::QAB(B)
- B(c);OGATE::QAB(B)
- S(h);N_GUARD::R1(A)
- Refutation
- P(e);
- Try
- R(A);
- Vars
- R(a);CHECK,OGATE,XP(C)::QAB(B),XR(a)
- S(h);CHECK,N_GUARD::R1(A),XS(h)
- R(a);OGATE,XR(G)::QAR1(B)
- B(c);OGATE,XR(G)::QAB(B)
- R(a);OGATE::P(C),XR(a)
- R(a);::S(H)
- B(c);OGATE::QAB(B)
- S(h);N_GUARD::R1(A)
- Refutation
- P(b);XR(A)
- Try
- R(A);
- Vars
- R(a);CHECK,OGATE,XP(C)::QAB(B),XR(a)
- S(h);CHECK,N_GUARD::R1(A),XS(h)
- R(a);OGATE,XR(G)::QAR1(B)
- B(c);OGATE,XR(G)::QAB(B)
- R(a);OGATE::P(C),XR(a)
- B(c);OGATE::QAB(B)
- S(h);N_GUARD::R1(A)
- Refutation
- P(e);CHECK,XR(A)
- Try
- Q(B);XR(a)
- Threat
- DUALS(5)
- Vars
- S(h);CHECK,N_GUARD::R1(A),XS(h)
- B(c);XR(G)::QAB1(B)
- Refutation
- B(c);XQ(B)
- Try
- Q(B);
- Threat
- QAB1(B)
- Vars
- R(a);CHECK,OGATE,XP(C)::QAB(B),XR(a)
- S(h);CHECK,N_GUARD::R1(A),XS(h)
- R(a);OGATE,XR(G)::QAB1(B)
- B(c);OGATE,XR(G)::QAB(B)
- Refutation
- R(a);XQ(B)
- Try
- Q(B);CHECK,XB(c)
- Refutation
- P(f);XQ(B)
- Try
- Actual
- Q(B);
- Vars
- R(a);CHECK,OGATE,P_SPINR(a),XP(C)::QAB(B),XR(a)
- S(h);CHECK,N_GUARD::R1(A),XS(h)
- R(a);OGATE,XR(G)::QAB(B)+P(C)
- B(c);OGATE,XR(G)::QAB(B)
- R(a);OGATE::QAB(B)+P(C)
- R(a);OGATE::QAB(B)+P(C),XR(a)
- R(a);OGATE::P(C),XR(a)
- B(c);OGATE::QAB(B)
- S(h);N_GUARD::R1(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).