MESON Chess Problem Database
Problem Display
PID: 259736 (4nr2/3P3p/2p1BPbK/q1k5/P1N2rR1/2P4n/3P4/1Qb1N3 w - - 0 1)
Hollenstein, Ernst
Schweizerische Schachzeitung, 1971
#2
11 + 10
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Qxc3
- 2.Qb6#
- 1...Qb4
- 2.Qxb4#
- 1...Qb6
- 2.Qxb6#
- 1...Qc7
- 2.Qb4#
- 1...Qd8
- 2.Qb4#
- 1...Qxa4
- 2.Qb6#
- 1...Qa6
- 2.Qb4#
- 1...Qa7
- 2.Qb4#
- 1...Qa8
- 2.Qb4#
- 2.Qb6#
- 1...Rd4
- 2.cxd4#
- 1...Re4
- 2.Sd3#
- 1...Rf5
- 2.Sd3#
- 1...Bd3
- 2.Sxd3#
- 1...Be4
- 2.d4#
- 1...Bh5
- 2.Sd3#
- 1...Bf7
- 2.Sd3#
- 1...Qxc3
- Tries
- 1.Rxf4?
- threat
- 2.d4#
- 1...Qxc3
- 2.Qb6#
- 1...Bd3
- 2.Sxd3#
- 1...Bxd2!
- threat
- 1.Rg5+?
- 1...Rf5
- 2.Sd3#
- 2.d4#
- 1...Bf5
- 2.Sd3#
- 1...Sxg5!
- 1...Rf5
- 1.Qe4?
- threat
- 2.Sd3#
- 2.Qe5#
- 2.d4#
- 1...Qxa4
- 2.Qe5#
- 1...Rxe4
- 2.Sd3#
- 1...Rxg4
- 2.Sd3#
- 2.Qe5#
- 1...R4xf6
- 2.Sd3#
- 2.Qe3#
- 2.Qd4#
- 2.Qe5#
- 1...Bxd2
- 2.Sd3#
- 2.Qe5#
- 1...Bxe4
- 2.d4#
- 1...Sxf6
- 2.Sd3#
- 2.d4#
- 1...Qc7
- 2.Sd3#
- 2.d4#
- 1...Rf1
- 2.Sd3#
- 2.Qe3#
- 2.Qd4#
- 2.Qe5#
- 1...Rf2
- 2.Sd3#
- 2.Qe3#
- 2.Qd4#
- 2.Qe5#
- 1...Rf3
- 2.Qd4#
- 2.Qe5#
- 1...Rf5
- 2.Sd3#
- 2.Qe3#
- 2.Qd4#
- 1...Sf2
- 2.Qe5#
- 2.d4#
- 1...Sc7
- 2.Sd3#
- 2.d4#
- 1...Qxc3!
- threat
- 1.Qf5+?
- 1...Rxf5
- 2.Sd3#
- 1...Bxf5!
- 1...Rxf5
- 1.d8Q?
- threat
- 2.Qxa5#
- 1...Qxc3
- 2.Qdb6#
- 2.Qbb6#
- 1...Qxd8
- 2.Qb4#
- 1...Qxa4
- 2.Qdb6#
- 2.Qbb6#
- 1...Rxc4
- 2.Rxc4#
- 1...Qb4
- 2.Qxb4#
- 2.cxb4#
- 1...Qb6
- 2.Qdxb6#
- 2.Qbxb6#
- 1...Qc7
- 2.Qb4#
- 1...Qa6
- 2.Qb4#
- 1...Qa7
- 2.Qb4#
- 1...Qa8
- 2.Qdb6#
- 2.Qb4#
- 2.Qbb6#
- 1...Sd6
- 2.Qxd6#
- 1...Sc7
- 2.Qe7#
- 2.Qd6#
- 2.Qxf8#
- 1...Qb5!
- threat
- 1.Rxf4?
- Keys
- 1.Qb8!
- threat
- 2.Qe5#
- 1...Qxc3
- 2.Qb6#
- 1...Rxc4
- 2.Rxc4#
- 1...Sxf6
- 2.Qd6#
- 2.Qxf8#
- 1...Qc7
- 2.Qb4#
- 1...Rd4
- 2.cxd4#
- 1...Re4
- 2.Sd3#
- 1...Rf5
- 2.Sd3#
- 1...Be4
- 2.d4#
- 1...Sd6
- 2.Qxd6#
- 1...Sc7
- 2.Qxf8#
- threat
- 1.Qb8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 9
- Sets
- Q(d);N_GUARD,XP(D)::QAB1(A)
- Q(d);N_GUARD::QAB1(A),XQ(d)
- Q(d);N_GUARD::QAB1(A)
- Q(d);N_GUARD,XP(E)::QAB1(A)
- R(c);OGATE,P_PINP(C)::P(D),XR(c)
- R(c);P_PINP(C),S_CUTB(g)::S(B)
- B(g);N_GUARD::S(B),XB(g)
- B(g);S_CUTR(c)::P(C)
- B(g);N_GUARD::S(B)
- Tries
- Try
- R(G);XR(c)
- Threat
- P(C)
- Vars
- Q(d);N_GUARD,XP(D)::QAB1(A)
- B(g);N_GUARD::S(B),XB(g)
- Refutation
- B(a);P_PINR(G),XP(C)
- Try
- R(G);CHECK
- Vars
- B(g);P_SPINB(g)::S(B)
- Refutation
- S(b);XR(G)
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- Q(d);XP(E)::QAR2(A)
- R(c);P_PINP(C),XQ(A)::S(B)
- B(g);XQ(A)::P(C)
- Refutation
- Q(d);XP(D)
- Try
- Q(A);CHECK
- Vars
- R(c);P_PINP(C),XQ(A)::S(B)
- Refutation
- B(g);XQ(A)
- Try
- P(K);
- Threat
- QAR2(K),XQ(d)
- Vars
- Q(d);N_GUARD,XQ(K)::QAB1(A)
- R(c);OGATE,P_PINP(C),XS(F)::R1(G),XR(c)
- Q(d);N_GUARD::QAB1(A)
- S(i);N_GUARD::QAB1(K),XS(i)
- Refutation
- Q(d);
- Try
- Actual
- Q(A);
- Threat
- QAR2(A)
- Vars
- Q(d);N_GUARD,XP(D)::QAB1(A)
- R(c);OGATE,P_PINP(C),XS(F)::R1(G),XR(c)
- Q(d);N_GUARD::QAB1(A)
- R(c);OGATE,P_PINP(C)::P(D),XR(c)
- R(c);P_PINP(C),S_CUTB(g)::S(B)
- B(g);S_CUTR(c)::P(C)
- S(i);N_GUARD::QAB1(A),XS(i)
- S(i);OGATE::QAB(A),XR(j)
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).