MESON Chess Problem Database
Problem Display
PID: 90300 (8/3p2p1/3P2K1/3RP3/5k2/1p1r1P2/1P1P4/1Q2N2N w - - 0 1)
Hertmann, Sandor
Die Schwalbe, 1928
#2
10 + 5
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rxd2
- 2.Qe4#
- 1...Rc3
- 2.Qe4#
- 2.Qf5#
- 1...Re3
- 2.Qf5#
- 1...Rxf3
- 2.Qf5#
- 1...Rd4
- 2.Qf5#
- 1...Rxd5
- 2.Qe4#
- 2.Qf5#
- 1...Rxd2
- Tries
- 1.Rd4+?
- 1...Rxd4
- 2.Qf5#
- 1...Kxe5!
- 1...Rxd4
- 1.Ra5?
- 1...Rxd2
- 2.Qe4#
- 1...Rxf3
- 2.Qf5#
- 1...Rd5
- 2.Qe4#
- 2.Qf5#
- 1...Rc3
- 2.Qe4#
- 2.Qf5#
- 1...Re3
- 2.Qf5#
- 1...Rd4
- 2.Qf5#
- 1...Rxd6+!
- 1...Rxd2
- 1.Rb5?
- 1...Rxd2
- 2.Qe4#
- 1...Rxf3
- 2.Qf5#
- 1...Rd5
- 2.Qe4#
- 2.Qf5#
- 1...Rc3
- 2.Qe4#
- 2.Qf5#
- 1...Re3
- 2.Qf5#
- 1...Rd4
- 2.Qf5#
- 1...Rxd6+!
- 1...Rxd2
- 1.Rc5?
- 1...Rxd2
- 2.Qe4#
- 1...Rxf3
- 2.Qf5#
- 1...Rd5
- 2.Qe4#
- 2.Qf5#
- 1...Rc3
- 2.Qe4#
- 2.Qf5#
- 1...Re3
- 2.Qf5#
- 1...Rd4
- 2.Qf5#
- 1...Rxd6+!
- 1...Rxd2
- 1.Qc2?
- 1...Rxd2
- 2.Qe4#
- 2.Qxd2#
- 1...Rxf3
- 2.Qf5#
- 2.Qc4#
- 1...Rxd5
- 2.Qe4#
- 2.Qf5#
- 1...Rc3
- 2.Qe4#
- 2.Qf5#
- 1...Re3
- 2.Qf5#
- 1...Rd4
- 2.Qf5#
- 1...bxc2!
- 1...Rxd2
- 1.Qd1?
- threat
- 2.Sg2#
- 2.Sxd3#
- 1...Rxd2
- 2.Qxd2#
- 1...Rxf3
- 2.Qxf3#
- 1...Rc3
- 2.Sg2#
- 1...Re3
- 2.Sg2#
- 1...Rd4
- 2.Sg2#
- 1...Rxd5!
- threat
- 1.e6?
- threat
- 2.Rf5#
- 1...Rxd2
- 2.Qe4#
- 1...Rxf3
- 2.Qf5#
- 1...Rxd5
- 2.Qe4#
- 1...dxe6!
- threat
- 1.Rd4+?
- Keys
- 1.Qc1!
- 1...Rxd2
- 2.Qxd2#
- 1...Rxf3
- 2.Qc4#
- 1...Rxd5
- 2.d4#
- 1...Rc3
- 2.dxc3#
- 1...Re3
- 2.dxe3#
- 1...Rd4
- 2.d3#
- 1...Rxd2
- 1.Qc1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 4
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- R(b);OGATE,XP(E)::QAR1(A)
- R(b);OGATE::QAR1(A)
- R(b);OGATE,XP(F)::QAR1(A)
- Tries
- Try
- R(G);CHECK
- Vars
- R(b);OGATE,XR(G)::QAR1(A)
- Refutation
- K(c);S_FLIGHT,XP(H)
- Try
- R(G);
- Vars
- R(b);OGATE,XP(E)::QAR1(A)
- R(b);OGATE,XP(F)::QAR1(A)
- R(b);OGATE::QAR1(A)
- Refutation
- R(b);CHECK,XP(I)
- Try
- R(G);
- Vars
- R(b);OGATE,XP(E)::QAR1(A)
- R(b);OGATE,XP(F)::QAR1(A)
- R(b);OGATE::QAR1(A)
- Refutation
- R(b);CHECK,XP(I)
- Try
- R(G);
- Vars
- R(b);OGATE,XP(E)::QAR1(A)
- R(b);OGATE,XP(F)::QAR1(A)
- R(b);OGATE::QAR1(A)
- Refutation
- R(b);CHECK,XP(I)
- Try
- Q(A);
- Vars
- R(b);OGATE::QAR1(A)
- Refutation
- P(a);XQ(A)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- R(b);OGATE,XP(E)::QAB(A),XR(b)
- R(b);OGATE,XP(F)::QAR1(A),XR(b)
- R(b);::S(B)
- Refutation
- R(b);XR(G)
- Try
- P(H);
- Threat
- R1(G)
- Vars
- R(b);OGATE,XP(E)::QAR1(A)
- R(b);OGATE,XP(F)::QAR1(A)
- R(b);OGATE,XR(G)::QAR1(A)
- Refutation
- P(d);XP(H)
- Try
- Actual
- Q(A);
- Vars
- R(b);OGATE,P_SPINR(b),XP(E)::QAB(A),XR(b)
- R(b);N_GUARD,XP(F)::QAR(A)
- R(b);OGATE,XR(G)::QAB(A)+P(E)
- R(b);OGATE::QAB(A)+P(E),XR(b)
- R(b);OGATE::P(E),XR(b)
- R(b);OGATE::QAB(A)+P(E)
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).