Meson Chess Problem Database

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Problem Display

PID: 262849 (3K4/B1p1Q3/p6p/r2kN2r/3b4/1PRbPP2/4n3/1q1R4 w - - 0 1)

Suchodolski, Wlodzimierz

Szachy, 1978

3K4/B1p1Q3/p6p/r2kN2r/3b4/1PRbPP2/4n3/1q1R4

#2

9 + 10

6490	yacpdb	2022

SOLUTION

SOUND
Sets
- 1...Rxe5
  - 2.Qd7#
- 1...Bc4
  - 2.bxc4#
- 1...Bb5
  - 2.Rc5#
- 1...Bxc3
  - 2.e4#
- 1...Bxe5
  - 2.e4#
Tries
- 1.Sxd3?
  - threat
    - 2.Sb4#
    - 2.Qd7#
    - 2.e4#
  - 1...Qxb3
    - 2.Qd7#
    - 2.e4#
  - 1...Bxc3
    - 2.Sb4#
    - 2.Qd7#
  - 1...Bxe3
    - 2.Sb4#
    - 2.Sf4#
    - 2.Qd7#
  - 1...Bxa7
    - 2.Sb4#
    - 2.Sf4#
    - 2.Qd7#
  - 1...Sxc3
    - 2.Sb4#
    - 2.Qd7#
  - 1...Rc5
    - 2.Sb4#
    - 2.Qd7#
  - 1...Bc5
    - 2.Sb4#
  - 1...c5
    - 2.Qd7#
  - 1...Ra4
    - 2.Qd7#
    - 2.e4#
  - 1...Rb5
    - 2.Qd7#
    - 2.e4#
  - 1...Rh4
    - 2.Sb4#
    - 2.Qd7#
  - 1...Re5
    - 2.Sb4#
    - 2.Qd7#
  - 1...Be5
    - 2.Sb4#
    - 2.Sf4#
    - 2.e4#
  - 1...Bb6
    - 2.Sb4#
    - 2.Sf4#
    - 2.Qd7#
  - 1...Bf6
    - 2.Sb4#
    - 2.Sf4#
    - 2.e4#
  - 1...Sg3
    - 2.Sb4#
    - 2.Sf4#
    - 2.Qd7#
  - 1...Qxd3!
- 1.Sg4?
  - threat
    - 2.Qd7#
  - 1...Bb5
    - 2.Sf6#
    - 2.Rc5#
  - 1...Bf5
    - 2.Sf6#
    - 2.Qe5#
  - 1...Be5
    - 2.e4#
  - 1...Bf6
    - 2.Sxf6#
    - 2.e4#
  - 1...Bc5!
- 1.Sc6?
  - threat
    - 2.Sb4#
    - 2.Qd7#
  - 1...Qxb3
    - 2.Qd7#
  - 1...Bxc3
    - 2.Qd7#
  - 1...Ra4
    - 2.Qd7#
  - 1...Rb5
    - 2.Qd7#
  - 1...Bf5
    - 2.Sb4#
    - 2.Qe5#
  - 1...Be5
    - 2.Sb4#
    - 2.e4#
  - 1...Bf6
    - 2.Sb4#
    - 2.e4#
  - 1...Bc5!
Keys
- 1.Sf7!
  - threat
    - 2.Qd7#
  - 1...Bc5
    - 2.Qe4#
  - 1...Bb5
    - 2.Rc5#
  - 1...Bf5
    - 2.Qe5#
  - 1...Be5
    - 2.e4#
  - 1...Bf6
    - 2.e4#

FEATURES

Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 3
Sets
- R(g);SBLOCK,XS(F)::QAR2(H)
- B(c);OGATE,P_SPINB(d)::P(B),XB(c)
- B(c);P_SPINB(d),S_CUTR(e)::R1(C)
- B(d);P_SPINB(c),XR(C)::P(D)
- B(d);P_SPINB(c),XS(F)::P(D)
Tries
- Try
  - S(F);XB(c)
  - Threat
    - DUALS(3)
  - Vars
    - B(d);::R(A)+S(F),DCHECK
    - P(j);::QAR2(H)
  - Refutation
    - Q(a);XS(F)
- Try
  - S(F);
  - Threat
    - QAR2(H)
  - Vars
    - B(d);P_SPINB(c)::P(D)
  - Refutation
    - B(d);P_SPINB(c)
- Try
  - S(F);
  - Threat
    - DUALS(2)
  - Vars
    - Q(a);XP(B)::QAR2(H)
    - B(d);P_SPINB(c),XR(C)::QAR2(H)
    - R(e);::QAR2(H)
  - Refutation
    - B(d);P_SPINB(c)
Actual
- S(F);
- Threat
  - QAR2(H)
- Vars
  - B(d);P_SPINB(c)::QAB1(H)
  - B(c);P_SPINB(d),S_CUTR(e)::R1(C)
  - B(c);P_SPINB(d),S_CUTR(g)::QAR1(H)
  - B(d);P_SPINB(c)::P(D)
  - B(d);P_PINQ(H),P_SPINB(c)::P(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).