MESON Chess Problem Database
Problem Display
PID: 160540 (8/5p2/1p1N1R1p/1P1k1K1R/1P1P1PN1/1PQ4b/2Pn1r2/4b1B1 w - - 0 1)
Ahs, Carl Johan Mathias
Die Schwalbe, 1936
#2
13 + 8
| 15148 | Sadier Collection | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Rf1
- 2.Qc6#
- 1...Re2
- 2.Qc6#
- 1...Rg2
- 2.Qc6#
- 1...Rh2
- 2.Qc6#
- 1...Rf3
- 2.Qc6#
- 1...Rxf4+
- 2.Kxf4#
- 1...Bf1
- 2.Se3#
- 1...Bg2
- 2.Se3#
- 1...Bxg4+
- 2.Kxg4#
- 1...Sb1
- 2.Qc4#
- 1...Sf1
- 2.Qc4#
- 1...Sxb3
- 2.Qc4#
- 1...Sf3
- 2.Qc4#
- 1...Sc4
- 2.Qxc4#
- 2.bxc4#
- 1...Se4
- 2.Qc4#
- 1...Rf1
- Tries
- 1.Sc4?
- threat
- 2.Se3#
- 2.Sxb6#
- 2.Rd6#
- 1...Rxf4+
- 2.Kxf4#
- 1...Sxc4
- 2.Qxc4#
- 2.bxc4#
- 1...Re2
- 2.Sxb6#
- 2.Rd6#
- 1...Rf3
- 2.Sxb6#
- 2.Rd6#
- 1...Sf1
- 2.Sxb6#
- 2.Rd6#
- 1...Se4
- 2.Se3#
- 2.Sxb6#
- 1...Bxg4+!
- threat
- 1.Se4?
- threat
- 2.Rd6#
- 1...Rxf4+
- 2.Kxf4#
- 1...Sxe4
- 2.Qc4#
- 1...Sc4
- 2.Qxc4#
- 2.bxc4#
- 1...Bxg4+!
- threat
- 1.Sb7?
- threat
- 2.Rd6#
- 1...Rxf4+
- 2.Kxf4#
- 1...Sc4
- 2.Qxc4#
- 2.bxc4#
- 1...Se4
- 2.Qc4#
- 1...Bxg4+!
- threat
- 1.Sxf7?
- threat
- 2.Rd6#
- 1...Rxf4+
- 2.Kxf4#
- 1...Sc4
- 2.Qxc4#
- 2.bxc4#
- 1...Se4
- 2.Qc4#
- 1...Bxg4+!
- threat
- 1.Sc8?
- threat
- 2.Sxb6#
- 2.Se7#
- 2.Rd6#
- 1...Rxf4+
- 2.Kxf4#
- 1...Re2
- 2.Sxb6#
- 2.Rd6#
- 2.Qc6#
- 1...Sc4
- 2.Se7#
- 2.Qxc4#
- 2.bxc4#
- 1...Se4
- 2.Sxb6#
- 2.Se7#
- 2.Qc4#
- 1...Bxg4+!
- threat
- 1.Se8?
- threat
- 2.Sc7#
- 2.Rd6#
- 1...Rxf4+
- 2.Kxf4#
- 1...Sc4
- 2.Sc7#
- 2.Qxc4#
- 2.bxc4#
- 1...Se4
- 2.Sc7#
- 2.Qc4#
- 1...Bxg4+!
- threat
- 1.Bxf2?
- threat
- 2.Qc6#
- 1...Bxg4+
- 2.Kxg4#
- 1...Sc4
- 2.Qf3#
- 2.Qxc4#
- 2.bxc4#
- 1...Bxf2!
- threat
- 1.Rxh3?
- threat
- 2.Se3#
- 1...Re2
- 2.Qc6#
- 1...Rf3
- 2.Qc6#
- 1...Sf1
- 2.Qc4#
- 1...Sc4
- 2.Qxc4#
- 2.bxc4#
- 1...Rxf4+!
- threat
- 1.Qxd2?
- threat
- 2.c4#
- 1...Rxf4+
- 2.Kxf4#
- 1...Bxg4+
- 2.Kxg4#
- 1...Bf1
- 2.Se3#
- 1...Bxd2!
- threat
- 1.Qe3?
- threat
- 2.Qe5#
- 1...Rxf4+
- 2.Kxf4#
- 1...Bxg4+
- 2.Kxg4#
- 1...Sf3
- 2.Qe4#
- 2.c4#
- 1...Sc4
- 2.Qe4#
- 2.bxc4#
- 1...Se4
- 2.Qxe4#
- 2.c4#
- 1...Re2!
- threat
- 1.Sc4?
- Keys
- 1.Qa1!
- 1...Rxf4+
- 2.Kxf4#
- 1...Bxg4+
- 2.Kxg4#
- 1...Sxb3
- 2.c4#
- 1...Rf1
- 2.Qa8#
- 1...Re2
- 2.Qa8#
- 1...Rg2
- 2.Qa8#
- 1...Rh2
- 2.Qa8#
- 1...Rf3
- 2.Qa8#
- 1...Bf1
- 2.Se3#
- 1...Bg2
- 2.Se3#
- 1...Sb1
- 2.c4#
- 1...Sf1
- 2.c4#
- 1...Sf3
- 2.c4#
- 1...Sc4
- 2.bxc4#
- 1...Se4
- 2.c4#
- 1...Rxf4+
- 1.Qa1!
This is a version of 160561
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 10
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(c);::QAB1(D)
- R(c);N_PINP(G)::QAB1(D)
- R(c);CHECK,XP(G)::R(K)+K(J),XR(c)
- B(d);N_PINS(H)::S(H)
- B(d);CHECK,XS(H)::R(K)+K(J),XB(d)
- S(b);N_GUARD::QAB1(D)
- S(b);N_GUARD,XP(C)::QAB1(D)
- S(b);N_GUARD,N_PINP(G)::QAB1(D)
- Tries
- Try
- S(L);
- Threat
- DUALS(3)
- Vars
- R(c);CHECK,XP(G)::R(K)+K(J),XR(c)
- Refutation
- B(d);CHECK,XS(H)
- Try
- S(L);
- Threat
- R1(M)
- Vars
- R(c);CHECK,XP(G)::R(K)+K(J),XR(c)
- S(b);N_GUARD,XS(L)::QAB1(D)
- Refutation
- B(d);CHECK,XS(H)
- Try
- S(L);
- Threat
- R1(M)
- Vars
- R(c);CHECK,XP(G)::R(K)+K(J),XR(c)
- S(b);N_GUARD::QAB1(D)
- Refutation
- B(d);CHECK,XS(H)
- Try
- S(L);XP(h)
- Threat
- R1(M)
- Vars
- R(c);CHECK,XP(G)::R(K)+K(J),XR(c)
- S(b);N_GUARD::QAB1(D)
- Refutation
- B(d);CHECK,XS(H)
- Try
- S(L);
- Threat
- DUALS(3)
- Vars
- R(c);CHECK,XP(G)::R(K)+K(J),XR(c)
- Refutation
- B(d);CHECK,XS(H)
- Try
- S(L);
- Threat
- DUALS(2)
- Vars
- R(c);CHECK,XP(G)::R(K)+K(J),XR(c)
- Refutation
- B(d);CHECK,XS(H)
- Try
- B(A);N_SPINP(G),XR(c)
- Threat
- QAB1(D)
- Vars
- B(d);CHECK,XS(H)::R(K)+K(J),XB(d)
- Refutation
- B(a);XB(A)
- Try
- R(K);N_SPINS(H),XB(d)
- Threat
- S(H)
- Vars
- R(c);N_PINP(G)::QAB1(D)
- R(c);::QAB1(D)
- S(b);N_GUARD::QAB1(D)
- Refutation
- R(c);CHECK,XP(G)
- Try
- Q(D);XS(b)
- Threat
- P(B)
- Vars
- R(c);CHECK,XP(G)::R(K)+K(J),XR(c)
- B(d);CHECK,XS(H)::R(K)+K(J),XB(d)
- B(d);N_PINS(H)::S(H)
- Refutation
- B(a);XQ(D)
- Try
- Q(D);
- Threat
- QAR1(D)
- Vars
- R(c);CHECK,XP(G)::R(K)+K(J),XR(c)
- B(d);CHECK,XS(H)::R(K)+K(J),XB(d)
- Refutation
- R(c);N_PINP(G)
- Try
- Actual
- Q(D);
- Vars
- R(c);CHECK,XP(G)::R(K)+K(J),XR(c)
- B(d);CHECK,XS(H)::R(K)+K(J),XB(d)
- S(b);N_GUARD,XP(C)::P(B)
- R(c);::QAB(D)
- R(c);N_PINP(G)::QAB(D)
- B(d);N_PINS(H)::S(H)
- S(b);N_GUARD::P(B)
- S(b);N_GUARD,N_PINP(G)::P(B)
- S(b);OGATE::P(C),XS(b)
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).