MESON Chess Problem Database
Problem Display
PID: 202381 (8/pn6/R1N1P3/1Pkp3p/1R3Q1K/3b4/pr1P4/B7 w - - 0 1)
Schuld, Henk L
Comm., Il Secolo, 1923
#2
9 + 8
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.Bd4#
- 1...Rc2
- 2.Bd4#
- 1...Rxd2
- 2.Bd4#
- 1...Rb3
- 2.Bd4#
- 1...Rxb4
- 2.Qxb4#
- 1...Bb1
- 2.d4#
- 1...Bf1
- 2.d4#
- 1...Bc2
- 2.d4#
- 1...Be2
- 2.d4#
- 1...Bc4
- 2.d4#
- 1...Be4
- 2.d4#
- 1...Bxb5
- 2.d4#
- 1...Bf5
- 2.d4#
- 1...Bg6
- 2.d4#
- 1...Bh7
- 2.d4#
- 1...Sa5
- 2.Qf8#
- 1...Sd6
- 2.Qd4#
- 1...Sd8
- 2.Qf8#
- 1...d4
- 2.Qe5#
- 2.Qxd4#
- 1...Rb1
- Tries
- 1.Kg3?
- 1...Rxd2
- 2.Bd4#
- 1...Rxb4
- 2.Qxb4#
- 1...Bxb5
- 2.d4#
- 1...d4
- 2.Qe5#
- 2.Qxd4#
- 1...Rb1
- 2.Bd4#
- 1...Rc2
- 2.Bd4#
- 1...Rb3
- 2.Bd4#
- 1...Bb1
- 2.d4#
- 1...Bf1
- 2.d4#
- 1...Bc2
- 2.d4#
- 1...Be2
- 2.d4#
- 1...Bc4
- 2.d4#
- 1...Be4
- 2.d4#
- 1...Bf5
- 2.d4#
- 1...Bg6
- 2.d4#
- 1...Bh7
- 2.d4#
- 1...Sa5
- 2.Qf8#
- 1...Sd6
- 2.Qd4#
- 1...Sd8
- 2.Qf8#
- 1...h4+!
- 1...Rxd2
- 1.Kg5?
- 1...Rxd2
- 2.Bd4#
- 1...Rxb4
- 2.Qxb4#
- 1...Bxb5
- 2.d4#
- 1...d4
- 2.Qe5#
- 2.Qxd4#
- 1...Rb1
- 2.Bd4#
- 1...Rc2
- 2.Bd4#
- 1...Rb3
- 2.Bd4#
- 1...Bb1
- 2.d4#
- 1...Bf1
- 2.d4#
- 1...Bc2
- 2.d4#
- 1...Be2
- 2.d4#
- 1...Bc4
- 2.d4#
- 1...Be4
- 2.d4#
- 1...Bf5
- 2.d4#
- 1...Bg6
- 2.d4#
- 1...Bh7
- 2.d4#
- 1...Sa5
- 2.Qf8#
- 1...Sd6
- 2.Qd4#
- 1...Sd8
- 2.Qf8#
- 1...h4!
- 1...Rxd2
- 1.Rxb2?
- threat
- 2.Qb4#
- 1...d4
- 2.Qxd4#
- 1...Bc4
- 2.d4#
- 1...Be4!
- threat
- 1.Qe3+?
- 1...d4
- 2.Qxd4#
- 2.Qe5#
- 1...Kd6!
- 1...d4
- 1.Qf2+?
- 1...d4
- 2.Qxd4#
- 1...Kd6!
- 1...d4
- 1.Kg3?
- Keys
- 1.Qc7!
- 1...Rxb4+
- 2.Sd4#
- 1...Rxd2
- 2.Bd4#
- 1...Bxb5
- 2.d4#
- 1...d4
- 2.Qe5#
- 1...Sa5
- 2.Qe7#
- 1...Rb1
- 2.Bd4#
- 1...Rc2
- 2.Bd4#
- 1...Rb3
- 2.Bd4#
- 1...Bb1
- 2.d4#
- 1...Bf1
- 2.d4#
- 1...Bc2
- 2.d4#
- 1...Be2
- 2.d4#
- 1...Bc4
- 2.d4#
- 1...Be4
- 2.d4#
- 1...Bf5
- 2.d4#
- 1...Bg6
- 2.d4#
- 1...Bh7
- 2.d4#
- 1...Sd6
- 2.Qxa7#
- 1...Sd8
- 2.Qe7#
- 1...Rxb4+
- 1.Qc7!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 4
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(b);OGATE::B(A)
- R(b);OGATE,XP(B)::B(A)
- R(b);OGATE,P_PINQ(D),XR(C)::QAB1(D),XR(b)
- B(c);OGATE::P(B)
- B(c);OGATE,XP(F)::P(B)
- S(h);N_GUARD::QAB(D)
- S(h);SBLOCK::QAB1(D)
- Tries
- Try
- K(E);S_FLIGHT
- Vars
- R(b);OGATE,XP(B)::B(A)
- R(b);OGATE,XR(C)::QAB1(D),XR(b)
- B(c);OGATE,XP(F)::P(B)
- R(b);OGATE::B(A)
- B(c);OGATE::P(B)
- S(h);N_GUARD::QAB(D)
- S(h);SBLOCK::QAB1(D)
- Refutation
- P(f);CHECK
- Try
- K(E);S_FLIGHT
- Vars
- R(b);OGATE,XP(B)::B(A)
- R(b);OGATE,XR(C)::QAB1(D),XR(b)
- B(c);OGATE,XP(F)::P(B)
- R(b);OGATE::B(A)
- B(c);OGATE::P(B)
- S(h);N_GUARD::QAB(D)
- S(h);SBLOCK::QAB1(D)
- Refutation
- P(f);
- Try
- R(C);XR(b)
- Threat
- QAB1(D)
- Vars
- P(e);::QAB1(D),XP(e)
- B(c);OGATE,SBLOCK::P(B)
- Refutation
- B(c);
- Try
- Q(D);CHECK
- Refutation
- K(d);S_FLIGHT
- Try
- Q(D);CHECK
- Vars
- P(e);P_SPINP(e)::QAB1(D),XP(e)
- Refutation
- K(d);S_FLIGHT
- Try
- Actual
- Q(D);
- Vars
- R(b);CHECK,SBLOCK,XR(C)::QAR(D)+S(H)
- R(b);OGATE,XP(B)::B(A)
- B(c);OGATE,XP(F)::P(B)
- P(e);OGATEB::QAR2(D)
- S(h);N_GUARD::QAB(D)
- R(b);OGATE::B(A)
- B(c);OGATE::P(B)
- S(h);OGATE,SBLOCK::QAB(D),XP(g)
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).