Meson Chess Problem Database

Kapustin, Fedor Mikhailovich

Novitski, Petr Adrinovich

2nd Place, SuperProblem 039. TT, 2012

10 + 9

6490	yacpdb	2018

Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 10
Sets
- Q(a);N_GUARD::R(F),XP(e)
- R(b);N_GUARD::S(G),XP(c)
- R(b);N_GUARD,XP(E)::S(G),XP(h)
- R(b);N_GUARD::S(G),XP(h)
- P(h);S_CUTR(b)::S(G)
Tries
- Try
  - S(G);
  - Threat
    - QAB1(H)
  - Vars
    - Q(a);N_GUARD::R(F),XP(e)
    - R(b);N_GUARD::QAB1(H)
  - Refutation
    - Q(a);XP(D)
- Try
  - B(A);
  - Threat
    - S(G),XP(c)
  - Vars
    - R(b);N_GUARD,XB(A)::S(G),XP(h)
    - Q(a);N_GUARD::R(F),XP(e)
  - Refutation
    - Q(a);
- Try
  - B(A);
  - Threat
    - S(G),XP(h)
  - Vars
    - R(b);N_GUARD,XB(A)::S(G),XP(c)
  - Refutation
    - R(b);XP(E)
- Try
  - B(I);
  - Threat
    - P(B),XR(b)
  - Vars
    - R(b);N_GUARD,XP(E)::S(G),XP(h)
    - R(b);N_GUARD::S(G),XP(c)
    - R(b);N_GUARD::S(G),XP(h)
  - Refutation
    - P(f);
- Try
  - B(I);CHECK
  - Vars
    - R(b);SBLOCK,XB(I)::S(G),XP(h)
  - Refutation
    - K(d);N_SPINP(e),N_SPINS(g),S_FLIGHT,XB(I)
Actual
- S(G);P_SPINS(G),XP(e)
- Threat
  - B(I)
- Vars
  - Q(a);CHECK,OGATE,P_SPINQ(a),XS(G)::R(F),XQ(a)
  - Q(a);N_PINS(G),XP(D)::R(F)+S(G),XQ(a)
  - Q(a);N_PINS(G)::R(F)+S(G),XQ(a)
  - R(b);N_GUARD::B(I),XR(b)

MESON Chess Problem Database