MESON Chess Problem Database
Problem Display
PID: 172017 (q7/2RN1B2/1B1R4/r4Q2/2PPPp2/2pk1K2/2pp4/2nn4 w - - 0 1)
Apro, Laszlo
HM., Magyar Sakkelet, 1972
#2
10 + 9
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qxe4+
- 2.Qxe4#
- 1...Qd5
- 2.exd5#
- 1...Qa6
- 2.e5#
- 1...Qa7
- 2.e5#
- 1...Qb8
- 2.e5#
- 1...Qc8
- 2.e5#
- 1...Qd8
- 2.e5#
- 1...Qe8
- 2.e5#
- 1...Qf8
- 2.e5#
- 1...Qg8
- 2.e5#
- 1...Qh8
- 2.e5#
- 1...Ra1
- 2.Sc5#
- 2.Se5#
- 1...Ra2
- 2.Sc5#
- 2.Se5#
- 1...Ra3
- 2.Sc5#
- 2.Se5#
- 1...Ra4
- 2.Sc5#
- 2.Se5#
- 1...Rc5
- 2.Sxc5#
- 1...Rd5
- 2.exd5#
- 2.e5#
- 1...Re5
- 2.Sxe5#
- 1...Ra6
- 2.Sc5#
- 2.Se5#
- 1...Ra7
- 2.Sc5#
- 2.Se5#
- 1...Qxe4+
- Tries
- 1.Bxa5?
- threat
- 2.Sc5#
- 2.Se5#
- 1...Qxe4+
- 2.Qxe4#
- 1...Qxa5
- 2.e5#
- 1...Qc6
- 2.Se5#
- 1...Qa7
- 2.Se5#
- 2.e5#
- 1...Qe8
- 2.Sc5#
- 2.e5#
- 1...Qh8
- 2.Sc5#
- 2.e5#
- 1...Sb3
- 2.Se5#
- 1...Qd5!
- threat
- 1.Bc5?
- threat
- 2.Se5#
- 1...Qxe4+
- 2.Qxe4#
- 1...Rxc5
- 2.Sxc5#
- 1...Qe8
- 2.e5#
- 1...Qh8
- 2.e5#
- 1...Qd5!
- threat
- 1.Bd5?
- threat
- 2.Se5#
- 2.e5#
- 1...Qxd5
- 2.exd5#
- 1...Rxd5
- 2.exd5#
- 2.e5#
- 1...Qe8
- 2.e5#
- 1...Qf8
- 2.Se5#
- 1...Qh8
- 2.e5#
- 1...Sf2
- 2.Se5#
- 1...Se3
- 2.Se5#
- 1...Rc5!
- threat
- 1.Rc5?
- threat
- 2.Se5#
- 1...Qxe4+
- 2.Qxe4#
- 1...Rxc5
- 2.Sxc5#
- 1...Qe8
- 2.e5#
- 1...Qh8
- 2.e5#
- 1...Qd5!
- threat
- 1.c5?
- threat
- 2.Se5#
- 1...Qxe4+
- 2.Qxe4#
- 1...Rxc5
- 2.Sxc5#
- 1...Qe8
- 2.e5#
- 1...Qh8
- 2.e5#
- 1...Qd5!
- threat
- 1.d5?
- threat
- 2.Se5#
- 2.e5#
- 1...Qxd5
- 2.Se5#
- 2.exd5#
- 1...Qc6
- 2.Se5#
- 1...Qe8
- 2.e5#
- 1...Qh8
- 2.e5#
- 1...Sf2
- 2.Se5#
- 1...Se3
- 2.Se5#
- 1...Rc5!
- threat
- 1.Bxa5?
- Keys
- 1.Rd5!
- threat
- 2.Se5#
- 2.e5#
- 1...Qxd5
- 2.exd5#
- 1...Rxd5
- 2.exd5#
- 2.e5#
- 1...Qc6
- 2.Se5#
- 1...Rc5
- 2.Se5#
- 1...Qe8
- 2.e5#
- 1...Qh8
- 2.e5#
- 1...Sf2
- 2.Se5#
- 1...Se3
- 2.Se5#
- threat
- 1.Rd5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 9
- Sets
- Q(i);CHECK,OGATE,P_SPINQ(i),XP(D)::QAB1(E),XQ(i)
- Q(i);::QAB(E)+P(D),XQ(i)
- Q(i);N_PINP(D)::QAB(E)+P(D)
- R(h);N_GUARD::S(I),XR(h)
- Tries
- Try
- B(F);XR(h)
- Threat
- DUALS(2)
- Vars
- Q(i);CHECK,OGATE,P_SPINQ(i),XP(D)::QAB1(E),XQ(i)
- Q(i);N_PINP(D),XB(F)::QAB(E)+P(D)
- Q(i);::S(I)
- S(a);::S(I)
- Refutation
- Q(i);
- Try
- B(F);
- Threat
- S(I)
- Vars
- Q(i);CHECK,OGATE,P_SPINQ(i),XP(D)::QAB1(E),XQ(i)
- R(h);XB(F)::S(I),XR(h)
- Q(i);N_PINP(D)::QAB(E)+P(D)
- Refutation
- Q(i);
- Try
- B(J);N_SPINP(D)
- Threat
- DUALS(2)
- Vars
- Q(i);OGATE,P_PINP(D),XB(J)::QAB(E)+P(D),XQ(i)
- Q(i);::QAB(E)+P(D)
- Q(i);::S(I)
- S(b);::S(I)
- Refutation
- R(h);
- Try
- R(H);
- Threat
- S(I)
- Vars
- Q(i);CHECK,OGATE,P_SPINQ(i),XP(D)::QAB1(E),XQ(i)
- R(h);XR(H)::S(I),XR(h)
- Q(i);N_PINP(D)::QAB(E)+P(D)
- Refutation
- Q(i);
- Try
- P(B);
- Threat
- S(I)
- Vars
- Q(i);CHECK,OGATE,P_SPINQ(i),XP(D)::QAB1(E),XQ(i)
- R(h);XP(B)::S(I),XR(h)
- Q(i);N_PINP(D)::QAB(E)+P(D)
- Refutation
- Q(i);
- Try
- P(C);N_SPINP(D)
- Threat
- DUALS(2)
- Vars
- Q(i);::S(I)
- Q(i);::QAB(E)+P(D)
- S(b);::S(I)
- Refutation
- R(h);
- Try
- Actual
- R(G);N_SPINP(D)
- Threat
- DUALS(2)
- Vars
- Q(i);OGATE,P_PINP(D),XR(G)::QAB(E)+P(D),XQ(i)
- Q(i);::S(I)
- R(h);::S(I)
- Q(i);::QAB(E)+P(D)
- S(b);::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).