MESON Chess Problem Database
Problem Display
PID: 241399 (8/1pp2N2/1N3p2/p1R2P1b/K1p1k1r1/2R1Pp1Q/8/5B2 w - - 0 1)
Hjelle, David
Revista Romana de Sah, 1948
#2
9 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rg1
- 2.R5xc4#
- 1...Rg2
- 2.R5xc4#
- 1...Rg3
- 2.R5xc4#
- 1...Rf4
- 2.R5xc4#
- 1...Rh4
- 2.R5xc4#
- 1...Rg5
- 2.R5xc4#
- 1...Rg6
- 2.R5xc4#
- 1...Rg7
- 2.R5xc4#
- 1...Rg8
- 2.R5xc4#
- 1...Bg6
- 2.Qxg4#
- 1...Bxf7
- 2.Qxg4#
- 1...f2
- 2.R3xc4#
- 1...cxb6
- 2.Sd6#
- 1...c6
- 2.Sd6#
- 1...Rg1
- Tries
- 1.Ka3?
- 1...Bxf7
- 2.Qxg4#
- 1...cxb6
- 2.Sd6#
- 1...Rg1
- 2.R5xc4#
- 1...Rg2
- 2.R5xc4#
- 1...Rg3
- 2.R5xc4#
- 1...Rf4
- 2.R5xc4#
- 1...Rh4
- 2.R5xc4#
- 1...Rg5
- 2.R5xc4#
- 1...Rg6
- 2.R5xc4#
- 1...Rg7
- 2.R5xc4#
- 1...Rg8
- 2.R5xc4#
- 1...Bg6
- 2.Qxg4#
- 1...f2
- 2.R3xc4#
- 1...c6
- 2.Sd6#
- 1...a4!
- 1...Bxf7
- 1.Kxa5?
- 1...Bxf7
- 2.Qxg4#
- 1...Rg1
- 2.R5xc4#
- 1...Rg2
- 2.R5xc4#
- 1...Rg3
- 2.R5xc4#
- 1...Rf4
- 2.R5xc4#
- 1...Rh4
- 2.R5xc4#
- 1...Rg5
- 2.R5xc4#
- 1...Rg6
- 2.R5xc4#
- 1...Rg7
- 2.R5xc4#
- 1...Rg8
- 2.R5xc4#
- 1...Bg6
- 2.Qxg4#
- 1...f2
- 2.R3xc4#
- 1...c6
- 2.Sd6#
- 1...cxb6+!
- 1...Bxf7
- 1.Sxc4?
- threat
- 2.Sd2#
- 2.Bd3#
- 1...Rg2
- 2.Bd3#
- 1...b5+!
- threat
- 1.Be2?
- threat
- 2.Bxf3#
- 2.Qxf3#
- 1...Rg1
- 2.R5xc4#
- 1...Rg2
- 2.R5xc4#
- 1...Rg3
- 2.R5xc4#
- 1...Rf4
- 2.R5xc4#
- 1...Rh4
- 2.R5xc4#
- 1...Rg5
- 2.R5xc4#
- 1...Rg6
- 2.R5xc4#
- 1...Rg7
- 2.R5xc4#
- 1...Rg8
- 2.R5xc4#
- 1...f2
- 2.Bf3#
- 2.R3xc4#
- 2.Qf3#
- 1...fxe2!
- threat
- 1.Bg2?
- threat
- 2.Bxf3#
- 2.Qxf3#
- 1...Rxg2
- 2.R5xc4#
- 1...Rg3
- 2.R5xc4#
- 1...Rf4
- 2.R5xc4#
- 1...Rh4
- 2.R5xc4#
- 1...Rg5
- 2.R5xc4#
- 1...Rg6
- 2.R5xc4#
- 1...Rg7
- 2.R5xc4#
- 1...Rg8
- 2.R5xc4#
- 1...fxg2!
- threat
- 1.Rd5?
- 1...Bxf7
- 2.Qxg4#
- 1...Rg1
- 2.Rd4#
- 1...Rg2
- 2.Rd4#
- 1...Rg3
- 2.Rd4#
- 1...Rf4
- 2.Rd4#
- 1...Rh4
- 2.Rd4#
- 1...Rg5
- 2.Rd4#
- 1...Rg6
- 2.Rd4#
- 1...Rg7
- 2.Rd4#
- 1...Rg8
- 2.Rd4#
- 1...Bg6
- 2.Qxg4#
- 1...f2
- 2.Rxc4#
- 1...c5
- 2.Sd6#
- 1...c6
- 2.Sd6#
- 1...cxb6!
- 1...Bxf7
- 1.Qh2?
- threat
- 2.Qc2#
- 1...Rg2
- 2.Qf4#
- 1...f2!
- threat
- 1.Qh4?
- 1...Bxf7
- 2.Qxg4#
- 1...cxb6
- 2.Sd6#
- 1...f2
- 2.Bg2#
- 1...Rf4
- 2.Qxf4#
- 1...Bg6
- 2.Qxg4#
- 1...c6
- 2.Sd6#
- 1...Rxh4!
- 1...Bxf7
- 1.Qxh5?
- threat
- 2.R5xc4#
- 2.Qxg4#
- 1...cxb6
- 2.Sd6#
- 2.Qxg4#
- 1...f2
- 2.Qxg4#
- 1...Rg1
- 2.R5xc4#
- 1...Rg2
- 2.R5xc4#
- 1...Rg3
- 2.R5xc4#
- 1...Rf4
- 2.R5xc4#
- 1...Rh4
- 2.R5xc4#
- 2.Qxh4#
- 1...Rg6
- 2.R5xc4#
- 1...Rg7
- 2.R5xc4#
- 1...Rg8
- 2.R5xc4#
- 1...Rg5!
- threat
- 1.Ka3?
- Keys
- 1.Bxc4!
- 1...Bxf7
- 2.Qxg4#
- 1...cxb6
- 2.Sd6#
- 1...Rg1
- 2.Bd5#
- 1...Rg2
- 2.Bd5#
- 1...Rg3
- 2.Bd5#
- 1...Rf4
- 2.Bd5#
- 1...Rh4
- 2.Bd5#
- 1...Rg5
- 2.Bd5#
- 1...Rg6
- 2.Bd5#
- 1...Rg7
- 2.Bd5#
- 1...Rg8
- 2.Bd5#
- 1...Bg6
- 2.Qxg4#
- 1...f2
- 2.Bd3#
- 1...c6
- 2.Sd6#
- 1...Bxf7
- 1.Bxc4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 10
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(d);::R(F),XP(b)
- B(f);N_GUARD::QAR2(D),XR(d)
- B(f);N_GUARD,XS(I)::QAR2(D),XR(d)
- P(a);::R(B),XP(b)
- P(i);N_GUARD,XS(H)::S(I)
- P(i);N_GUARD::S(I)
- Tries
- Try
- K(E);P-FLIGHT
- Vars
- B(f);N_GUARD,XS(I)::QAR2(D),XR(d)
- P(i);N_GUARD,XS(H)::S(I)
- R(d);::R(F),XP(b)
- B(f);N_GUARD::QAR2(D),XR(d)
- P(a);::R(B),XP(b)
- P(i);N_GUARD::S(I)
- Refutation
- P(e);
- Try
- K(E);P-FLIGHT,XP(e)
- Vars
- B(f);N_GUARD,XS(I)::QAR2(D),XR(d)
- R(d);::R(F),XP(b)
- B(f);N_GUARD::QAR2(D),XR(d)
- P(a);::R(B),XP(b)
- P(i);N_GUARD::S(I)
- Refutation
- P(i);CHECK,XS(H)
- Try
- S(H);XP(b)
- Threat
- DUALS(2)
- Vars
- R(d);::B(A)
- Refutation
- P(h);CHECK
- Try
- B(A);
- Threat
- DUALS(2)
- Vars
- R(d);::R(F),XP(b)
- Refutation
- P(a);XB(A)
- Try
- B(A);P_PINP(a)
- Threat
- DUALS(2)
- Vars
- R(d);N_SPINP(a),XB(A)::R(F),XP(b)
- R(d);::R(F),XP(b)
- Refutation
- P(a);N_SPINP(a),XB(A)
- Try
- R(F);
- Vars
- B(f);N_GUARD,XS(I)::QAR2(D),XR(d)
- R(d);::R1(F)
- B(f);N_GUARD::QAR2(D),XR(d)
- P(a);::R(B),XP(b)
- P(i);N_GUARD::S(I)
- Refutation
- P(i);XS(H)
- Try
- Q(D);
- Threat
- QAB(D)
- Vars
- R(d);N_GUARD::QAR1(D)
- Refutation
- P(a);
- Try
- Q(D);P_PINR(d)
- Vars
- B(f);N_GUARD,XS(I)::QAR2(D),XR(d)
- P(i);N_GUARD,XS(H)::S(I)
- P(a);OGATEB::B(A)
- R(d);OGATE::QAR1(D),XR(d)
- B(f);N_GUARD::QAR2(D),XR(d)
- P(i);N_GUARD::S(I)
- Refutation
- R(d);N_SPINR(d),XQ(D)
- Try
- Q(D);XB(f)
- Threat
- DUALS(2)
- Vars
- P(a);::QAR2(D),XR(d)
- R(d);::R(F),XP(b)
- Refutation
- R(d);
- Try
- Actual
- B(A);XP(b)
- Vars
- B(f);N_GUARD,XS(I)::QAR2(D),XR(d)
- P(i);N_GUARD,XS(H)::S(I)
- R(d);::B(A)
- B(f);N_GUARD::QAR2(D),XR(d)
- P(a);::B(A)
- P(i);N_GUARD::S(I)
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).