MESON Chess Problem Database
Problem Display
PID: 245198 (4R1q1/2N5/4b1p1/1QBp2P1/p2PkpRP/r2N3K/3Ppb2/1B6 w - - 0 1)
Segers, Marcel
Schackvarlden, 1933
#2
12 + 10
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Kf3
- 2.Se5#
- 1...Kf5
- 2.Rxf4#
- 1...Rxd3+
- 2.Qxd3#
- 1...Kf3
- Tries
- 1.Kg2?
- threat
- 2.Sxf2#
- 2.Rxf4#
- 1...Kf5
- 2.Rxf4#
- 1...Rxd3
- 2.Bxd3#
- 2.Qxd3#
- 1...Bxd4
- 2.Rxf4#
- 1...Bxh4
- 2.Sf2#
- 2.Rxf4#
- 1...Qf7
- 2.Sxf2#
- 1...Qf8
- 2.Sxf2#
- 1...Be1
- 2.Sf2#
- 2.Rxf4#
- 1...Bg1
- 2.Sf2#
- 2.Rxf4#
- 1...Be3
- 2.Sf2#
- 1...Bg3
- 2.Sf2#
- 1...e1S+!
- threat
- 1.Bxa3?
- threat
- 2.Qxd5#
- 1...Kf3
- 2.Se5#
- 1...Kxd4
- 2.Qxa4#
- 2.Qb4#
- 1...Kf5
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sxf2#
- 2.Sb4#
- 2.Sxf4#
- 2.Sc5#
- 2.Se5#
- 2.Rxf4#
- 1...Qxe8!
- threat
- 1.Bb6?
- threat
- 2.Qxd5#
- 1...Rxd3+
- 2.Qxd3#
- 1...Kf3
- 2.Se5#
- 1...Kf5
- 2.Rxf4#
- 1...Qxe8!
- threat
- 1.Bd6?
- threat
- 2.Qxd5#
- 1...Rxd3+
- 2.Qxd3#
- 1...Kf3
- 2.Se5#
- 1...Kxd4
- 2.Qb4#
- 1...Kf5
- 2.Rxf4#
- 1...Qxe8!
- threat
- 1.Ba7?
- threat
- 2.Qxd5#
- 1...Rxd3+
- 2.Qxd3#
- 1...Kf3
- 2.Se5#
- 1...Kf5
- 2.Rxf4#
- 1...Qxe8!
- threat
- 1.Rxe6+?
- 1...Kf3
- 2.Se5#
- 2.Rxf4#
- 1...Kf5
- 2.Rxf4#
- 2.Re5#
- 1...Qxe6!
- 1...Kf3
- 1.Qb3?
- threat
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sxf2#
- 2.Sb4#
- 2.Sxf4#
- 2.Se5#
- 2.Qxd5#
- 1...Kf3
- 2.Se1#
- 2.Se5#
- 1...Kf5
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sxf2#
- 2.Sb4#
- 2.Sxf4#
- 2.Se5#
- 2.Rxf4#
- 1...Qxe8
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sxf2#
- 2.Sb4#
- 2.Sxf4#
- 2.Se5#
- 1...Bxd4
- 2.Qxd5#
- 1...Bxh4
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sf2#
- 2.Sb4#
- 2.Sxf4#
- 2.Se5#
- 2.Qxd5#
- 1...axb3
- 2.Se1#
- 2.Se5#
- 1...e1Q
- 2.Sc1#
- 2.Sxe1#
- 2.Sxf2#
- 2.Qxd5#
- 1...e1S
- 2.Sxe1#
- 2.Sxf2#
- 2.Qxd5#
- 1...e1B
- 2.Sc1#
- 2.Sxe1#
- 2.Sb2#
- 2.Sxf2#
- 2.Sb4#
- 2.Sxf4#
- 2.Se5#
- 2.Qxd5#
- 1...e1R
- 2.Sc1#
- 2.Sxe1#
- 2.Sxf2#
- 2.Qxd5#
- 1...Ra1
- 2.Sxf2#
- 2.Qxd5#
- 1...Ra2
- 2.Sb2#
- 2.Sxf2#
- 2.Qxd5#
- 1...Be1
- 2.Sc1#
- 2.Sxe1#
- 2.Sb2#
- 2.Sf2#
- 2.Sb4#
- 2.Sxf4#
- 2.Se5#
- 2.Qxd5#
- 1...Bg1
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sf2#
- 2.Sb4#
- 2.Sxf4#
- 2.Se5#
- 2.Qxd5#
- 1...Be3
- 2.Se1#
- 2.Se5#
- 2.Qxd5#
- 1...Bg3
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sf2#
- 2.Sb4#
- 2.Sxf4#
- 2.Se5#
- 2.Qxd5#
- 1...Rxb3!
- threat
- 1.Kg2?
- Keys
- 1.Bf8!
- threat
- 2.Qxd5#
- 1...Rxd3+
- 2.Qxd3#
- 1...Kf3
- 2.Se5#
- 1...Kxd4
- 2.Qb4#
- 1...Kf5
- 2.Rxf4#
- threat
- 1.Bf8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- K(e);N_PINS(C),N_SPINB(h),N_SPINP(f),S_FLIGHT::S(C)
- K(e);N_PINR(F),N_SPINB(h),N_SPINP(f),S_FLIGHT::R1(F),XP(f)
- R(c);CHECK,OGATE,P_SPINR(c),XS(C)::QAB1(H),XR(c)
- Tries
- Try
- K(D);N_SPINR(F),N_SPINS(C),S_FLIGHT
- Threat
- DUALS(2)
- Vars
- K(e);N_SPINB(h),N_SPINP(f),S_FLIGHT::R1(F),XP(f)
- B(b);XP(E)::R1(F),XP(f)
- Q(j);::B(A)+S(C),DCHECK,XB(b)
- B(b);::B(A)+S(C),DCHECK
- Refutation
- P(a);CHECK
- Try
- B(I);N_SPINS(C),XR(c)
- Threat
- QAB1(H),XP(g)
- Vars
- K(e);N_SPINB(h),N_SPINP(f),S_FLIGHT::S(C)
- Refutation
- Q(j);N_SPINB(h),XR(L)
- Try
- B(I);
- Threat
- QAB1(H),XP(g)
- Vars
- R(c);CHECK,OGATE,P_SPINR(c),XS(C)::QAB1(H),XR(c)
- K(e);N_PINS(C),N_SPINB(h),N_SPINP(f),S_FLIGHT::S(C)
- K(e);N_PINR(F),N_SPINB(h),N_SPINP(f),P_SPINP(g),S_FLIGHT::R1(F),XP(f)
- Refutation
- Q(j);N_SPINB(h),XR(L)
- Try
- B(I);
- Threat
- QAB1(H),XP(g)
- Vars
- R(c);CHECK,OGATE,P_SPINR(c),XS(C)::QAB1(H),XR(c)
- K(e);N_PINS(C),N_SPINB(h),N_SPINP(f),S_FLIGHT::S(C)
- K(e);N_SPINB(h),OGATEB,P-FLIGHT,XP(E)::QAR2(H)
- K(e);N_PINR(F),N_SPINB(h),N_SPINP(f),P_SPINP(g),S_FLIGHT::R1(F),XP(f)
- Refutation
- Q(j);N_SPINB(h),XR(L)
- Try
- B(I);
- Threat
- QAB1(H),XP(g)
- Vars
- R(c);CHECK,OGATE,P_SPINR(c),XS(C)::QAB1(H),XR(c)
- K(e);N_PINS(C),N_SPINB(h),N_SPINP(f),S_FLIGHT::S(C)
- K(e);N_PINR(F),N_SPINB(h),N_SPINP(f),P_SPINP(g),S_FLIGHT::R1(F),XP(f)
- Refutation
- Q(j);N_SPINB(h),XR(L)
- Try
- R(L);CHECK,N_SPINR(F),XB(h)
- Refutation
- Q(j);P_PINR(F),XR(L)
- Try
- Q(H);N_SPINS(C)
- Threat
- DUALS(8)
- Vars
- B(b);XP(E)::QAB1(H),XP(g)
- Refutation
- R(c);P_PINS(C),XQ(H)
- Try
- Actual
- B(I);
- Threat
- QAB1(H),XP(g)
- Vars
- R(c);CHECK,OGATE,P_SPINR(c),XS(C)::QAB1(H),XR(c)
- K(e);N_PINS(C),N_SPINB(h),N_SPINP(f),S_FLIGHT::S(C)
- K(e);N_SPINB(h),OGATEB,P-FLIGHT,XP(E)::QAR2(H)
- K(e);N_PINR(F),N_SPINB(h),N_SPINP(f),P_SPINP(g),S_FLIGHT::R1(F),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).