MESON Chess Problem Database
Problem Display
PID: 275148 (8/B1pp4/K1pn4/2R1N3/3kbQp1/6p1/3P2B1/3n4 w - - 0 1)
Franken, Maurits
Western Morning News, 1925
(First published on Sat Dec 12 1925)
#2
7 + 9
| 15239 | Valois Notebooks | 2024 |
SOLUTION
- SOUND
- Sets
- 1...Sb2
- 2.Qe3#
- 1...Sf2
- 2.Qe3#
- 1...Sc3
- 2.Qe3#
- 2.dxc3#
- 1...Se3
- 2.Qxe3#
- 2.dxe3#
- 1...Sc4
- 2.Qxe4#
- 1...Sb5
- 2.Qxe4#
- 1...Sf5
- 2.Qxe4#
- 1...Sb7
- 2.Qxe4#
- 1...Sf7
- 2.Qxe4#
- 1...Sc8
- 2.Qxe4#
- 1...Se8
- 2.Qxe4#
- 1...Sb2
- Tries
- 1.Sd3?
- 1...Sb2
- 2.Qe3#
- 1...Sf2
- 2.Qe3#
- 1...Sc3
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sc4
- 2.Qxe4#
- 1...Sb5
- 2.Qxe4#
- 1...Sf5
- 2.Qxe4#
- 1...Sb7
- 2.Qxe4#
- 1...Sf7
- 2.Qxe4#
- 1...Sc8
- 2.Qxe4#
- 1...Se8
- 2.Qxe4#
- 1...Kxd3!
- 1...Sb2
- 1.Sf3+?
- 1...Kd3
- 2.Bf1#
- 1...gxf3!
- 1...Kd3
- 1.Sc4?
- 1...Sxc4
- 2.Qxe4#
- 1...Sb2
- 2.Qe3#
- 1...Sf2
- 2.Qe3#
- 1...Sc3
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sb5
- 2.Qxe4#
- 1...Sf5
- 2.Qxe4#
- 1...Sb7
- 2.Qxe4#
- 1...Sf7
- 2.Qxe4#
- 1...Sc8
- 2.Qxe4#
- 1...Se8
- 2.Qxe4#
- 1...Kd3!
- 1...Sxc4
- 1.Sxg4?
- 1...Sb2
- 2.Qe3#
- 1...Sf2
- 2.Qe3#
- 1...Sc3
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sc4
- 2.Qxe4#
- 1...Sb5
- 2.Qxe4#
- 1...Sf5
- 2.Qxe4#
- 1...Sb7
- 2.Qxe4#
- 1...Sf7
- 2.Qxe4#
- 1...Sc8
- 2.Qxe4#
- 1...Se8
- 2.Qxe4#
- 1...Kd3!
- 1...Sb2
- 1.Sxc6+?
- 1...Kd3
- 2.Bf1#
- 1...dxc6!
- 1...Kd3
- 1.Sg6?
- 1...Sb2
- 2.Qe3#
- 1...Sf2
- 2.Qe3#
- 1...Sc3
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sc4
- 2.Qxe4#
- 1...Sb5
- 2.Qxe4#
- 1...Sf5
- 2.Qxe4#
- 1...Sb7
- 2.Qxe4#
- 1...Sf7
- 2.Qxe4#
- 1...Sc8
- 2.Qxe4#
- 1...Se8
- 2.Qxe4#
- 1...Kd3!
- 1...Sb2
- 1.Sxd7?
- 1...Sb2
- 2.Qe3#
- 1...Sf2
- 2.Qe3#
- 1...Sc3
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sc4
- 2.Qxe4#
- 1...Sb5
- 2.Qxe4#
- 1...Sf5
- 2.Qxe4#
- 1...Sb7
- 2.Qxe4#
- 1...Sf7
- 2.Qxe4#
- 1...Sc8
- 2.Qxe4#
- 1...Se8
- 2.Qxe4#
- 1...Kd3!
- 1...Sb2
- 1.Sf7?
- 1...Sxf7
- 2.Qxe4#
- 1...Sb2
- 2.Qe3#
- 1...Sf2
- 2.Qe3#
- 1...Sc3
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sc4
- 2.Qxe4#
- 1...Sb5
- 2.Qxe4#
- 1...Sf5
- 2.Qxe4#
- 1...Sb7
- 2.Qxe4#
- 1...Sc8
- 2.Qxe4#
- 1...Se8
- 2.Qxe4#
- 1...Kd3!
- 1...Sxf7
- 1.Bh1?
- 1...Sb2
- 2.Qe3#
- 1...Sf2
- 2.Qe3#
- 1...Sc3
- 2.Qe3#
- 2.dxc3#
- 1...Se3
- 2.Qxe3#
- 2.dxe3#
- 1...Sc4
- 2.Qxe4#
- 1...Sb5
- 2.Qxe4#
- 1...Sf5
- 2.Qxe4#
- 1...Sb7
- 2.Qxe4#
- 1...Sf7
- 2.Qxe4#
- 1...Sc8
- 2.Qxe4#
- 1...Se8
- 2.Qxe4#
- 1...g2!
- 1...Sb2
- 1.Bxe4?
- threat
- 2.Rc4#
- 2.Rd5#
- 2.Rxc6#
- 1...Sc4
- 2.Bb1#
- 2.Bh1#
- 2.Bc2#
- 2.Bg2#
- 2.Bd3#
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bxc6#
- 2.Bg6#
- 2.Bh7#
- 2.Rxc4#
- 2.Rd5#
- 1...Sb5
- 2.Bb1#
- 2.Bh1#
- 2.Bc2#
- 2.Bg2#
- 2.Bd3#
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bxc6#
- 2.Bg6#
- 2.Bh7#
- 2.Rc4#
- 2.Rd5#
- 1...Sb7
- 2.Bb1#
- 2.Bh1#
- 2.Bc2#
- 2.Bg2#
- 2.Bd3#
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bxc6#
- 2.Bg6#
- 2.Bh7#
- 2.Rc4#
- 2.Rd5#
- 1...Sc8
- 2.Bb1#
- 2.Bh1#
- 2.Bc2#
- 2.Bg2#
- 2.Bd3#
- 2.Bf3#
- 2.Bd5#
- 2.Bf5#
- 2.Bxc6#
- 2.Bg6#
- 2.Bh7#
- 2.Rc4#
- 2.Rd5#
- 1...Sxe4!
- threat
- 1.Bb6?
- 1...Sb2
- 2.Qe3#
- 1...Sf2
- 2.Qe3#
- 1...Sc3
- 2.Qe3#
- 2.dxc3#
- 1...Se3
- 2.Qxe3#
- 2.dxe3#
- 1...Sc4
- 2.Qxe4#
- 1...Sb5
- 2.Qxe4#
- 1...Sf5
- 2.Qxe4#
- 1...Sb7
- 2.Qxe4#
- 1...Sf7
- 2.Qxe4#
- 1...Sc8
- 2.Qxe4#
- 1...Se8
- 2.Qxe4#
- 1...cxb6!
- 1...Sb2
- 1.Rc3+?
- 1...c5
- 2.Rd3#
- 1...Kd5!
- 1...c5
- 1.Sd3?
- Keys
- 1.Qf1!
- 1...Bd3+
- 2.Qxd3#
- 1...Bxg2
- 2.Qd3#
- 1...Bf3
- 2.Qd3#
- 1...Bd5
- 2.Rxd5#
- 1...Bb1
- 2.Rd5#
- 1...Bc2
- 2.Rd5#
- 1...Bf5
- 2.Rd5#
- 1...Bg6
- 2.Rd5#
- 1...Bh7
- 2.Rd5#
- 1...Sb2
- 2.Qg1#
- 1...Sf2
- 2.Qa1#
- 1...Sc3
- 2.Qg1#
- 1...Se3
- 2.Qa1#
- 1...Sc4
- 2.Qxc4#
- 1...Sb5
- 2.Qc4#
- 1...Sf5
- 2.Qc4#
- 1...Sb7
- 2.Qc4#
- 1...Sf7
- 2.Qc4#
- 1...Sc8
- 2.Qc4#
- 1...Se8
- 2.Qc4#
- 1...Bd3+
- 1.Qf1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 9
- ADDED MATES = 11
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD::QAB1(C)
- S(g);N_GUARD::QAR1(C),XB(d)
- Tries
- Try
- S(E);
- Vars
- S(a);N_GUARD::QAB1(C)
- S(a);N_GUARD::QAB1(C),XS(a)
- S(g);N_GUARD::QAR1(C),XB(d)
- Refutation
- K(c);N_SPINB(d),P-FLIGHT,XS(E)
- Try
- S(E);CHECK
- Vars
- K(c);N_SPINB(d),P-FLIGHT,S_CUTP(e)::B(B)
- Refutation
- P(e);XS(E)
- Try
- S(E);
- Vars
- S(g);N_GUARD,XS(E)::QAR1(C),XB(d)
- S(a);N_GUARD::QAB1(C)
- S(a);N_GUARD::QAB1(C),XS(a)
- S(g);N_GUARD::QAR1(C),XB(d)
- Refutation
- K(c);N_SPINB(d),P-FLIGHT
- Try
- S(E);XP(e)
- Vars
- S(a);N_GUARD::QAB1(C)
- S(a);N_GUARD::QAB1(C),XS(a)
- S(g);N_GUARD::QAR1(C),XB(d)
- Refutation
- K(c);N_SPINB(d),P-FLIGHT
- Try
- S(E);CHECK,XP(f)
- Vars
- K(c);N_SPINB(d),P-FLIGHT,S_CUTP(i)::B(B)
- Refutation
- P(i);XS(E)
- Try
- S(E);
- Vars
- S(a);N_GUARD::QAB1(C)
- S(a);N_GUARD::QAB1(C),XS(a)
- S(g);N_GUARD::QAR1(C),XB(d)
- Refutation
- K(c);N_SPINB(d),P-FLIGHT
- Try
- S(E);XP(i)
- Vars
- S(a);N_GUARD::QAB1(C)
- S(a);N_GUARD::QAB1(C),XS(a)
- S(g);N_GUARD::QAR1(C),XB(d)
- Refutation
- K(c);N_SPINB(d),P-FLIGHT
- Try
- S(E);
- Vars
- S(g);N_GUARD,XS(E)::QAR1(C),XB(d)
- S(a);N_GUARD::QAB1(C)
- S(a);N_GUARD::QAB1(C),XS(a)
- S(g);N_GUARD::QAR1(C),XB(d)
- Refutation
- K(c);N_SPINB(d),P-FLIGHT
- Try
- B(B);
- Vars
- S(a);N_GUARD::QAB1(C)
- S(g);N_GUARD::QAR1(C),XB(d)
- Refutation
- P(b);
- Try
- B(B);XB(d)
- Threat
- DUALS(3)
- Refutation
- S(g);P_SPINS(g),XB(B)
- Try
- B(G);
- Vars
- S(a);N_GUARD::QAB1(C)
- S(g);N_GUARD::QAR1(C),XB(d)
- Refutation
- P(h);XB(G)
- Try
- R(D);CHECK
- Vars
- P(f);P_SPINP(f)::R1(D)
- Refutation
- K(c);P-FLIGHT
- Try
- Actual
- Q(C);N_PINB(d)
- Vars
- B(d);CHECK,N_GUARD::QAR1(C),XB(d)
- B(d);N_GUARD,XB(B)::QAR1(C)
- B(d);N_GUARD::QAR1(C)
- B(d);::B(G)+R(D),DCHECK,XB(d)
- B(d);::B(G)+R(D),DCHECK
- S(a);N_GUARD::QAB(C)
- S(a);OGATE::QAB(C)
- S(g);N_GUARD::QAR1(C),XS(g)
- S(g);N_GUARD::QAR1(C)
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