MESON Chess Problem Database
Problem Display
PID: 176523 (8/8/3p4/3r1p1R/1P2pNk1/1Q2B1P1/8/1K4RB w - - 0 1)
Junker, Karl
Schach-Echo, 1972
#2
9 + 5
| 5454 | Near Snap | 2018 |
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Rd1+
- 2.Qxd1#
- 1...Rd2
- 2.Qg8#
- 1...Rd3
- 2.Qg8#
- 1...Rd4
- 2.Qg8#
- 1...Ra5
- 2.Qd1#
- 2.Qg8#
- 1...Rb5
- 2.Qd1#
- 2.Qg8#
- 1...Rc5
- 2.Qd1#
- 2.Qg8#
- 1...Re5
- 2.Qd1#
- 2.Qg8#
- 1...Rd1+
- Tries
- 1.Ka1?
- 1...Rd1+
- 2.Qxd1#
- 1...Rd2
- 2.Qg8#
- 1...Rd3
- 2.Qg8#
- 1...Rd4
- 2.Qg8#
- 1...Rb5
- 2.Qd1#
- 2.Qg8#
- 1...Rc5
- 2.Qd1#
- 2.Qg8#
- 1...Re5
- 2.Qd1#
- 2.Qg8#
- 1...Ra5+!
- 1...Rd1+
- 1.Kc1?
- 1...Rd1+
- 2.Qxd1#
- 1...Rd2
- 2.Qg8#
- 1...Rd3
- 2.Qg8#
- 1...Rd4
- 2.Qg8#
- 1...Ra5
- 2.Qd1#
- 2.Qg8#
- 1...Rb5
- 2.Qd1#
- 2.Qg8#
- 1...Re5
- 2.Qd1#
- 2.Qg8#
- 1...Rc5+!
- 1...Rd1+
- 1.Kb2?
- 1...Rd1
- 2.Qxd1#
- 2.Qg8#
- 1...Rd3
- 2.Qg8#
- 1...Rd4
- 2.Qg8#
- 1...Ra5
- 2.Qd1#
- 2.Qg8#
- 1...Rb5
- 2.Qd1#
- 2.Qg8#
- 1...Rc5
- 2.Qd1#
- 2.Qg8#
- 1...Re5
- 2.Qd1#
- 2.Qg8#
- 1...Rd2+!
- 1...Rd1
- 1.Sxd5?
- threat
- 2.Sf6#
- 2.Rh4#
- 2.Qd1#
- 1...f4
- 2.Sf6#
- 1...Kxh5!
- threat
- 1.Bg2?
- 1...Kxg3
- 2.Bh1#
- 2.Bxe4#
- 1...Rd2
- 2.Qg8#
- 1...Rd3
- 2.Qg8#
- 1...Rd4
- 2.Qg8#
- 1...Ra5
- 2.Qg8#
- 1...Rb5
- 2.Qg8#
- 1...Rc5
- 2.Qg8#
- 1...Re5
- 2.Qg8#
- 1...Rd1+!
- 1...Kxg3
- 1.Bxe4?
- 1...Rd1+
- 2.Qxd1#
- 1...Rd2
- 2.Qg8#
- 1...Rd3
- 2.Qg8#
- 1...Rd4
- 2.Qg8#
- 1...Ra5
- 2.Qd1#
- 2.Qg8#
- 1...Rb5
- 2.Qd1#
- 2.Qg8#
- 1...Rc5
- 2.Qd1#
- 2.Qg8#
- 1...Re5
- 2.Qd1#
- 2.Qg8#
- 1...fxe4!
- 1...Rd1+
- 1.Bc1?
- 1...Rd1
- 2.Qxd1#
- 2.Qg8#
- 1...Rd2
- 2.Qg8#
- 1...Rd3
- 2.Qg8#
- 1...Rd4
- 2.Qg8#
- 1...Ra5
- 2.Qd1#
- 2.Qg8#
- 1...Rb5
- 2.Qd1#
- 2.Qg8#
- 1...Rc5
- 2.Qd1#
- 2.Qg8#
- 1...Re5
- 2.Qd1#
- 2.Qg8#
- 1...e3!
- 1...Rd1
- 1.Bd2?
- threat
- 2.Qd1#
- 1...Rxd2
- 2.Qg8#
- 1...Rd3
- 2.Qg8#
- 1...e3!
- threat
- 1.Bf2?
- 1...Rd1+
- 2.Qxd1#
- 1...Rd2
- 2.Qg8#
- 1...Rd3
- 2.Qg8#
- 1...Rd4
- 2.Qg8#
- 1...Ra5
- 2.Qd1#
- 2.Qg8#
- 1...Rb5
- 2.Qd1#
- 2.Qg8#
- 1...Rc5
- 2.Qd1#
- 2.Qg8#
- 1...Re5
- 2.Qd1#
- 2.Qg8#
- 1...e3!
- 1...Rd1+
- 1.Bd4?
- threat
- 2.Qd1#
- 1...Rxd4
- 2.Qg8#
- 1...e3!
- threat
- 1.Bb6?
- 1...Rd1+
- 2.Qxd1#
- 1...Rd2
- 2.Qg8#
- 1...Rd3
- 2.Qg8#
- 1...Rd4
- 2.Qg8#
- 1...Ra5
- 2.Qd1#
- 2.Qg8#
- 1...Rb5
- 2.Qd1#
- 2.Qg8#
- 1...Rc5
- 2.Qd1#
- 2.Qg8#
- 1...Re5
- 2.Qd1#
- 2.Qg8#
- 1...e3!
- 1...Rd1+
- 1.Ba7?
- 1...Rd1+
- 2.Qxd1#
- 1...Rd2
- 2.Qg8#
- 1...Rd3
- 2.Qg8#
- 1...Rd4
- 2.Qg8#
- 1...Ra5
- 2.Qd1#
- 2.Qg8#
- 1...Rb5
- 2.Qd1#
- 2.Qg8#
- 1...Rc5
- 2.Qd1#
- 2.Qg8#
- 1...Re5
- 2.Qd1#
- 2.Qg8#
- 1...e3!
- 1...Rd1+
- 1.Rd1?
- 1...Kxg3
- 2.Rg1#
- 1...Rd2
- 2.Qg8#
- 1...Rd3
- 2.Qg8#
- 1...Rd4
- 2.Qg8#
- 1...Ra5
- 2.Qg8#
- 1...Rb5
- 2.Qg8#
- 1...Rc5
- 2.Qg8#
- 1...Re5
- 2.Qg8#
- 1...Rxd1+!
- 1...Kxg3
- 1.Re1?
- 1...Kxg3
- 2.Rg1#
- 1...Rd2
- 2.Qg8#
- 1...Rd3
- 2.Qg8#
- 1...Rd4
- 2.Qg8#
- 1...Ra5
- 2.Qg8#
- 1...Rb5
- 2.Qg8#
- 1...Rc5
- 2.Qg8#
- 1...Re5
- 2.Qg8#
- 1...Rd1+!
- 1...Kxg3
- 1.Rf1?
- 1...Kxg3
- 2.Rg1#
- 1...Rd2
- 2.Qg8#
- 1...Rd3
- 2.Qg8#
- 1...Rd4
- 2.Qg8#
- 1...Ra5
- 2.Qg8#
- 1...Rb5
- 2.Qg8#
- 1...Rc5
- 2.Qg8#
- 1...Re5
- 2.Qg8#
- 1...Rd1+!
- 1...Kxg3
- 1.Rh6?
- threat
- 2.Rg6#
- 1...Kg5
- 2.Rg6#
- 1...Rd1+!
- threat
- 1.Qa2?
- threat
- 2.Qe2#
- 1...Rd2
- 2.Qg8#
- 1...Rd1+!
- threat
- 1.Qc2?
- threat
- 2.Qe2#
- 1...Rd1+
- 2.Qxd1#
- 1...Rd2!
- threat
- 1.Qc4?
- threat
- 2.Qe2#
- 1...Rd2
- 2.Qg8#
- 1...Rd3
- 2.Qg8#
- 1...Rd1+!
- threat
- 1.Qb2?
- threat
- 2.Qg7#
- 2.Qe2#
- 1...Rd2
- 2.Qg7#
- 1...Rd4
- 2.Qe2#
- 1...Re5
- 2.Qe2#
- 1...Rd1+!
- threat
- 1.b5?
- 1...Rd1+
- 2.Qxd1#
- 1...Rd2
- 2.Qg8#
- 1...Rd3
- 2.Qg8#
- 1...Rd4
- 2.Qg8#
- 1...Rc5
- 2.Qd1#
- 2.Qg8#
- 1...Re5
- 2.Qd1#
- 2.Qg8#
- 1...Rxb5!
- 1...Rd1+
- 1.Ka1?
- Keys
- 1.Rc1!
- 1...Kxg3
- 2.Rg1#
- 1...Rd1
- 2.Qg8#
- 1...Rd2
- 2.Qg8#
- 1...Rd3
- 2.Qg8#
- 1...Rd4
- 2.Qg8#
- 1...Ra5
- 2.Qg8#
- 1...Rb5
- 2.Qg8#
- 1...Rc5
- 2.Qg8#
- 1...Re5
- 2.Qg8#
- 1...Kxg3
- 1.Rc1!
Anticipated by 6199(1927)
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- R(c);CHECK,N_GUARD::QAB(D),XR(c)
- R(c);OGATE::QAR(D)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- R(c);CHECK,N_GUARD::QAB(D),XR(c)
- R(c);OGATE::QAR(D)
- Refutation
- R(c);CHECK
- Try
- K(A);P-FLIGHT
- Vars
- R(c);CHECK,N_GUARD::QAB(D),XR(c)
- R(c);OGATE::QAR(D)
- Refutation
- R(c);CHECK
- Try
- K(A);P-FLIGHT
- Vars
- R(c);OGATE::QAR(D)
- Refutation
- R(c);CHECK
- Try
- S(H);XR(c)
- Threat
- DUALS(3)
- Vars
- P(d);::S(H)
- Refutation
- K(b);S_FLIGHT,XR(I)
- Try
- B(C);
- Vars
- R(c);OGATE::QAR(D)
- Refutation
- R(c);CHECK
- Try
- B(C);XP(a)
- Vars
- R(c);CHECK,N_GUARD::QAB(D),XR(c)
- R(c);OGATE::QAR(D)
- Refutation
- P(d);XB(C)
- Try
- B(E);
- Vars
- R(c);OGATE::QAR(D)
- Refutation
- P(a);
- Try
- B(E);
- Threat
- QAB(D)
- Vars
- R(c);OGATE,XB(E)::QAR(D)
- R(c);OGATE::QAR(D)
- Refutation
- P(a);
- Try
- B(E);
- Vars
- R(c);CHECK,N_GUARD::QAB(D),XR(c)
- R(c);OGATE::QAR(D)
- Refutation
- P(a);
- Try
- B(E);
- Threat
- QAB(D)
- Vars
- R(c);OGATE,XB(E)::QAR(D)
- Refutation
- P(a);
- Try
- B(E);
- Vars
- R(c);CHECK,N_GUARD::QAB(D),XR(c)
- R(c);OGATE::QAR(D)
- Refutation
- P(a);
- Try
- B(E);
- Vars
- R(c);CHECK,N_GUARD::QAB(D),XR(c)
- R(c);OGATE::QAR(D)
- Refutation
- P(a);
- Try
- R(B);
- Vars
- K(b);OGATEB,P-FLIGHT,XP(F)::R(B)
- R(c);OGATE::QAR(D)
- Refutation
- R(c);CHECK,XR(B)
- Try
- R(B);
- Vars
- K(b);OGATEB,P-FLIGHT,XP(F)::R(B)
- R(c);OGATE::QAR(D)
- Refutation
- R(c);CHECK
- Try
- R(B);
- Vars
- K(b);OGATEB,P-FLIGHT,XP(F)::R(B)
- R(c);OGATE::QAR(D)
- Refutation
- R(c);CHECK
- Try
- R(I);
- Threat
- R(I)
- Vars
- K(b);P-FLIGHT::R1(I)
- Refutation
- R(c);CHECK
- Try
- Q(D);
- Threat
- QAB(D)
- Vars
- R(c);OGATE::QAR(D)
- Refutation
- R(c);CHECK
- Try
- Q(D);
- Threat
- QAB(D)
- Vars
- R(c);CHECK,N_GUARD::QAB(D),XR(c)
- Refutation
- R(c);
- Try
- Q(D);
- Threat
- QAB(D)
- Vars
- R(c);OGATE::QAR(D)
- Refutation
- R(c);CHECK
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- R(c);::QAR(D)
- R(c);::QAB(D)
- Refutation
- R(c);CHECK
- Try
- P(G);
- Vars
- R(c);CHECK,N_GUARD::QAB(D),XR(c)
- R(c);OGATE::QAR(D)
- Refutation
- R(c);P_PINQ(D),XP(G)
- Try
- Actual
- R(B);
- Vars
- K(b);OGATEB,P-FLIGHT,XP(F)::R(B)
- R(c);OGATE,P_PINR(B)::QAR(D)
- R(c);OGATE::QAR(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).