MESON Chess Problem Database
Problem Display
PID: 84767 (8/3K4/4Pp1n/R1N1kB1Q/8/r2RP1P1/2r4B/4b1n1 w - - 0 1)
Hassberg, Eric Manfred
Comm., Jornal de Xadrez, 1947
#2
10 + 7
| 70 | American Chess Problemist | 1950 |
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rd2
- 2.Sa4#
- 1...Rxc5
- 2.Rxc5#
- 1...Rxd3+
- 2.Sxd3#
- 1...Bd2
- 2.g4#
- 1...Bxg3
- 2.Bxg3#
- 1...Rd2
- Tries
- 1.Kc6?
- threat
- 2.Rd5#
- 1...Rxc5+
- 2.Rxc5#
- 1...Rd2
- 2.Sa4#
- 2.Sd7#
- 1...Rxd3!
- threat
- 1.Sa4+?
- 1...Rc5
- 2.Rxc5#
- 1...Bxa5!
- 1...Rc5
- 1.Bh3+?
- 1...Sf5
- 2.Qxf5#
- 1...f5!
- 1...Sf5
- 1.Be4+?
- 1...Sf5
- 2.Rd5#
- 2.Qxf5#
- 1...f5!
- 1...Sf5
- 1.Bg4+?
- 1...Sf5
- 2.Qxf5#
- 1...f5!
- 1...Sf5
- 1.Bg6+?
- 1...Sf5
- 2.Qxf5#
- 1...f5!
- 1...Sf5
- 1.Bh7+?
- 1...Sf5
- 2.Qxf5#
- 1...f5!
- 1...Sf5
- 1.Qf3?
- threat
- 2.Rd5#
- 2.Qe4#
- 2.Qd5#
- 2.Qf4#
- 1...Rxd3+
- 2.Sxd3#
- 1...Rxc5
- 2.Rxc5#
- 2.Qe4#
- 2.Qf4#
- 1...Bxg3
- 2.Bxg3#
- 2.Rd5#
- 2.Qe4#
- 2.Qd5#
- 1...Rd2
- 2.Sa4#
- 2.Qe4#
- 2.Qd5#
- 2.Qf4#
- 1...Rf2
- 2.Rd5#
- 2.Qe4#
- 2.Qd5#
- 1...Rc4
- 2.Rd5#
- 2.Qd5#
- 1...Ra4
- 2.Rd5#
- 2.Qd5#
- 1...Se2
- 2.Rd5#
- 2.Qe4#
- 2.Qd5#
- 1...Sh3
- 2.Rd5#
- 2.Qe4#
- 2.Qd5#
- 1...Sxf3!
- threat
- 1.e4?
- threat
- 2.Rd5#
- 1...Rxc5
- 2.Rxc5#
- 1...Bxg3
- 2.Bxg3#
- 1...Rd2
- 2.Sa4#
- 1...Rxd3+!
- threat
- 1.g4+?
- 1...Bg3
- 2.Bxg3#
- 1...Rxh2!
- 1...Bg3
- 1.e7?
- threat
- 2.e8Q#
- 2.e8R#
- 1...Rxd3+
- 2.Sxd3#
- 1...Rxh2
- 2.e8Q#
- 2.e8R#
- 1...Rxc5
- 2.Rxc5#
- 2.e8Q#
- 2.e8R#
- 1...Rxa5
- 2.e8Q#
- 2.e8R#
- 1...Bxg3
- 2.Bxg3#
- 2.e8Q#
- 2.e8R#
- 1...Bxa5
- 2.e8Q#
- 2.e8R#
- 1...Sxf5
- 2.e8Q#
- 2.e8R#
- 1...Rc1
- 2.e8Q#
- 2.e8R#
- 1...Rca2
- 2.e8Q#
- 2.e8R#
- 1...Rb2
- 2.e8Q#
- 2.e8R#
- 1...Rd2
- 2.Sa4#
- 2.e8Q#
- 2.e8R#
- 1...Re2
- 2.e8Q#
- 2.e8R#
- 1...Rf2
- 2.e8Q#
- 2.e8R#
- 1...Rg2
- 2.e8Q#
- 2.e8R#
- 1...Rcc3
- 2.e8Q#
- 2.e8R#
- 1...Rc4
- 2.e8Q#
- 2.e8R#
- 1...Ra1
- 2.e8Q#
- 2.e8R#
- 1...Raa2
- 2.e8Q#
- 2.e8R#
- 1...Rb3
- 2.e8Q#
- 2.e8R#
- 1...Rac3
- 2.e8Q#
- 2.e8R#
- 1...Ra4
- 2.e8Q#
- 2.e8R#
- 1...Bd2
- 2.g4#
- 2.e8Q#
- 2.e8R#
- 1...Bf2
- 2.e8Q#
- 2.e8R#
- 1...Bc3
- 2.e8Q#
- 2.e8R#
- 1...Bb4
- 2.e8Q#
- 2.e8R#
- 1...Se2
- 2.e8Q#
- 2.e8R#
- 1...Sf3
- 2.e8Q#
- 2.e8R#
- 1...Sh3
- 2.e8Q#
- 2.e8R#
- 1...Sg4
- 2.e8Q#
- 2.e8R#
- 1...Sf7
- 2.e8Q#
- 2.e8R#
- 1...Sg8!
- threat
- 1.Kc6?
- Keys
- 1.Qd1!
- threat
- 2.Rd5#
- 1...Rxd3+
- 2.Sxd3#
- 1...Kxf5
- 2.Qh5#
- 1...Rxc5
- 2.Rxc5#
- 1...Rd2
- 2.Sa4#
- 1...Bd2
- 2.g4#
- threat
- 1.Qd1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- R(c);N_GUARD,P_PINR(B),S_CUTB(a)::R(E)+S(F)
- R(c);OGATE,P_SPINR(c),XS(F)::R(E),XR(c)
- R(d);CHECK,XR(B)::R(E)+S(F),DCHECK,XR(d)
- B(a);N_GUARD,S_CUTR(c)::B(A)+P(D)
- B(a);OGATE,P_SPINB(a),XP(D)::B(A),XB(a)
- Tries
- Try
- K(J);P_SPINS(F),S_FLIGHT
- Threat
- R1(B)
- Vars
- R(c);CHECK,OGATE,P_SPINR(c),XS(F)::R(E),XR(c)
- Refutation
- R(d);XR(B)
- Try
- S(F);CHECK
- Vars
- R(c);N_GUARD,P_SPINR(c)::R(E),XR(c)
- Refutation
- B(a);XR(E)
- Try
- B(G);CHECK
- Vars
- S(g);N_GUARD,P_SPINS(g)::QAR1(H),XS(g)
- Refutation
- P(f);P_SPINP(f)
- Try
- B(G);CHECK
- Refutation
- P(f);P_SPINP(f)
- Try
- B(G);CHECK
- Vars
- S(g);N_GUARD,P_SPINS(g)::QAR1(H),XS(g)
- Refutation
- P(f);P_SPINP(f)
- Try
- B(G);CHECK
- Vars
- S(g);N_GUARD,P_SPINS(g)::QAR1(H),XS(g)
- Refutation
- P(f);P_SPINP(f)
- Try
- B(G);CHECK
- Vars
- S(g);N_GUARD,P_SPINS(g)::QAR1(H),XS(g)
- Refutation
- P(f);P_SPINP(f)
- Try
- Q(H);
- Threat
- DUALS(4)
- Vars
- R(d);CHECK,XR(B)::R(E)+S(F),DCHECK,XR(d)
- Refutation
- S(b);XQ(H)
- Try
- P(C);
- Threat
- R1(B)
- Vars
- R(c);OGATE,P_SPINR(c),XS(F)::R(E),XR(c)
- B(a);OGATE,P_SPINB(a),XP(D)::B(A),XB(a)
- R(c);N_GUARD,P_PINR(B),S_CUTB(a)::R(E)+S(F)
- Refutation
- R(d);CHECK,XR(B)
- Try
- P(D);CHECK
- Vars
- B(a);N_GUARD,P_SPINB(a)::B(A),XB(a)
- Refutation
- R(c);XB(A)
- Try
- P(I);
- Threat
- P=Q
- Vars
- R(d);CHECK,XR(B)::R(E)+S(F),DCHECK,XR(d)
- R(c);XB(A)::P=Q
- R(d);XR(E)::P=Q
- B(a);XR(E)::P=Q
- S(g);P_SPINS(g),XB(G)::P=Q
- R(c);::P=Q
- R(d);::P=Q
- B(a);::P=Q
- S(b);::P=Q
- S(g);::P=Q
- Refutation
- S(g);
- Try
- Actual
- Q(H);
- Threat
- R1(B)
- Vars
- R(d);CHECK,XR(B)::R(E)+S(F),DCHECK,XR(d)
- K(e);OGATEB,P-FLIGHT,XB(G)::QAR2(H)
- R(c);OGATE,P_SPINR(c),XS(F)::R(E),XR(c)
- R(c);N_GUARD,P_PINR(B),S_CUTB(a)::R(E)+S(F)
- B(a);N_GUARD,S_CUTR(c)::B(A)+P(D)
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).