MESON Chess Problem Database
Problem Display
PID: 231600 (8/Q1p5/2Pp4/3p4/1N1pp3/2B1knK1/4b3/4R3 w - - 0 1)
Rothler, Emil
Uj Nemezdek, 1927
#2
6 + 8
| 6490 | yacpdb | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Sxe1
- 2.Qxd4#
- 1...Sg1
- 2.Qxd4#
- 1...Sd2
- 2.Bxd4#
- 2.Qxd4#
- 1...Sh2
- 2.Qxd4#
- 1...Sh4
- 2.Qxd4#
- 1...Se5
- 2.Qxd4#
- 1...Sg5
- 2.Qxd4#
- 1...Sxe1
- Tries
- 1.Sa2?
- 1...Sxe1
- 2.Qxd4#
- 1...Sg1
- 2.Qxd4#
- 1...Sd2
- 2.Qxd4#
- 1...Sh2
- 2.Qxd4#
- 1...Sh4
- 2.Qxd4#
- 1...Se5
- 2.Qxd4#
- 1...Sg5
- 2.Qxd4#
- 1...Kd3!
- 1...Sxe1
- 1.Sa6?
- 1...Sxe1
- 2.Qxd4#
- 1...Sg1
- 2.Qxd4#
- 1...Sd2
- 2.Qxd4#
- 1...Sh2
- 2.Qxd4#
- 1...Sh4
- 2.Qxd4#
- 1...Se5
- 2.Qxd4#
- 1...Sg5
- 2.Qxd4#
- 1...Kd3!
- 1...Sxe1
- 1.Ba1?
- 1...Sxe1
- 2.Qxd4#
- 1...Sg1
- 2.Qxd4#
- 1...Sd2
- 2.Bxd4#
- 2.Qxd4#
- 1...Sh2
- 2.Qxd4#
- 1...Sh4
- 2.Qxd4#
- 1...Se5
- 2.Qxd4#
- 1...Sg5
- 2.Qxd4#
- 1...Kd2!
- 1...Sxe1
- 1.Bb2?
- 1...Sxe1
- 2.Bc1#
- 2.Qxd4#
- 1...Sg1
- 2.Bc1#
- 2.Qxd4#
- 1...Sd2
- 2.Bxd4#
- 2.Qxd4#
- 1...Sh2
- 2.Bc1#
- 2.Qxd4#
- 1...Sh4
- 2.Bc1#
- 2.Qxd4#
- 1...Se5
- 2.Bc1#
- 2.Qxd4#
- 1...Sg5
- 2.Bc1#
- 2.Qxd4#
- 1...Kd2!
- 1...Sxe1
- 1.Qc5?
- 1...Sxe1
- 2.Qxd4#
- 1...Sg1
- 2.Qxd4#
- 1...Sd2
- 2.Bxd4#
- 2.Qxd4#
- 1...Sh2
- 2.Qxd4#
- 1...Sh4
- 2.Qxd4#
- 1...Se5
- 2.Qxd4#
- 1...Sg5
- 2.Qxd4#
- 1...dxc5!
- 1...Sxe1
- 1.Qb6?
- 1...Sxe1
- 2.Qxd4#
- 1...Sg1
- 2.Qxd4#
- 1...Sd2
- 2.Bxd4#
- 2.Qxd4#
- 1...Sh2
- 2.Qxd4#
- 1...Sh4
- 2.Qxd4#
- 1...Se5
- 2.Qxd4#
- 1...Sg5
- 2.Qxd4#
- 1...cxb6!
- 1...Sxe1
- 1.Qa2?
- threat
- 2.Rxe2#
- 2.Qxe2#
- 1...Sxe1
- 2.Bd2#
- 2.Qd2#
- 1...Sg1
- 2.Bd2#
- 2.Qd2#
- 1...Sd2
- 2.Bxd2#
- 2.Qxd2#
- 1...d3
- 2.Sxd5#
- 1...dxc3!
- threat
- 1.Qa3?
- 1...Sxe1
- 2.Qc1#
- 1...dxc3
- 2.Qxc3#
- 1...Sg1
- 2.Qc1#
- 1...Sh2
- 2.Qc1#
- 1...Sh4
- 2.Qc1#
- 1...Se5
- 2.Qc1#
- 1...Sg5
- 2.Qc1#
- 1...d3
- 2.Sxd5#
- 1...Sd2!
- 1...Sxe1
- 1.Qa6?
- threat
- 2.Sc2#
- 2.Sxd5#
- 2.Rxe2#
- 2.Qxe2#
- 1...Sxe1
- 2.Sxd5#
- 1...Sg1
- 2.Sc2#
- 2.Sxd5#
- 1...d3
- 2.Sxd5#
- 1...dxc3!
- threat
- 1.Sa2?
- Keys
- 1.Qa1!
- 1...Sxe1
- 2.Qc1#
- 1...dxc3
- 2.Qxc3#
- 1...Sg1
- 2.Qc1#
- 1...Sd2
- 2.Bxd4#
- 1...Sh2
- 2.Qc1#
- 1...Sh4
- 2.Qc1#
- 1...Se5
- 2.Qc1#
- 1...Sg5
- 2.Qc1#
- 1...d3
- 2.Sxd5#
- 1...Sxe1
- 1.Qa1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 6
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- S(c);N_GUARD,N_SPINB(a),XR(A)::QAB1(F),XP(d)
- S(c);N_GUARD::QAB1(F),XP(d)
- Tries
- Try
- S(D);
- Vars
- S(c);N_GUARD,N_SPINB(a),XR(A)::QAB1(F),XP(d)
- S(c);N_GUARD::QAB1(F),XP(d)
- Refutation
- K(b);N_SPINB(a),N_SPINP(d),P-FLIGHT
- Try
- S(D);
- Vars
- S(c);N_GUARD,N_SPINB(a),XR(A)::QAB1(F),XP(d)
- S(c);N_GUARD::QAB1(F),XP(d)
- Refutation
- K(b);N_SPINB(a),N_SPINP(d),P-FLIGHT
- Try
- B(B);
- Vars
- S(c);N_GUARD,N_SPINB(a),XR(A)::QAB1(F),XP(d)
- S(c);N_GUARD::QAB1(F),XP(d)
- Refutation
- K(b);N_SPINB(a),N_SPINP(d),S_FLIGHT
- Try
- B(B);
- Refutation
- K(b);N_SPINB(a),N_SPINP(d),S_FLIGHT
- Try
- Q(F);
- Vars
- S(c);N_GUARD,N_SPINB(a),XR(A)::QAB1(F),XP(d)
- S(c);N_GUARD::QAB1(F),XP(d)
- Refutation
- P(g);N_SPINP(d),XQ(F)
- Try
- Q(F);
- Vars
- S(c);N_GUARD,N_SPINB(a),XR(A)::QAB1(F),XP(d)
- S(c);N_GUARD::QAB1(F),XP(d)
- Refutation
- P(h);N_SPINP(d),XQ(F)
- Try
- Q(F);N_PINP(d)
- Threat
- DUALS(2)
- Vars
- P(d);SBLOCK::S(D),XP(f)
- Refutation
- P(d);XB(B)
- Try
- Q(F);N_PINP(d)
- Vars
- S(c);N_GUARD,N_SPINB(a),XR(A)::QAB(F)
- P(d);OGATE,P_SPINP(d),XB(B)::QAR2(F),XP(d)
- S(c);N_GUARD::QAB(F)
- P(d);SBLOCK::S(D),XP(f)
- Refutation
- S(c);
- Try
- Q(F);N_PINP(d)
- Threat
- DUALS(4)
- Vars
- S(c);N_SPINB(a),XR(A)::S(D),XP(f)
- P(d);::S(D),XP(f)
- Refutation
- P(d);XB(B)
- Try
- Actual
- Q(F);N_PINP(d)
- Vars
- S(c);N_GUARD,N_SPINB(a),XR(A)::QAB(F)
- P(d);OGATE,XB(B)::QAR2(F),XP(d)
- S(c);N_GUARD::QAB(F)
- S(c);N_GUARD,SBLOCK::B(B),XP(d)
- P(d);SBLOCK::S(D),XP(f)
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).