Meson Chess Problem Database

Drese, Gerardus Hendrikus

Tijdschrift vd KNSB, 1934

11 + 13

6490	yacpdb	2009

Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 1
Sets
- Q(c);N_GUARD::R(A),XB(d)
- R(m);N_GUARD,P_PINP(J)::QAR1(G),XR(m)
Tries
- Try
  - B(C);N_SPINS(F)
  - Threat
    - DUALS(2)
  - Vars
    - R(m);N_GUARD,P_PINP(J)::QAR1(G),XR(m)
    - R(m);::S(F),XP(g)
    - B(i);::S(F),XP(g)
  - Refutation
    - R(a);CHECK
- Try
  - R(H);CHECK,XP(k)
  - Vars
    - K(j);P-FLIGHT::QAB1(G),XP(g)
  - Refutation
    - K(j);N_SPINB(d),N_SPINS(h),P-FLIGHT,XR(H)
- Try
  - Q(G);XP(g)
  - Threat
    - DUALS(3)
  - Vars
    - Q(c);::QAR1(G),XP(k)
    - S(b);::QAR1(G),XP(k)
    - P(f);N_SPINS(h)::QAR2(G)
  - Refutation
    - K(j);N_SPINS(h),P-FLIGHT,P_SPINP(f)
- Try
  - Q(G);XP(l)
  - Threat
    - QAB1(G)
  - Vars
    - R(m);N_GUARD::QAB1(G),XR(m)
    - R(m);N_GUARD,P_PINQ(G)::B(C),XS(h)
  - Refutation
    - B(i);XQ(G)
- Try
  - Q(G);
  - Threat
    - DUALS(2)
  - Vars
    - R(m);::QAR1(G),XP(k)
    - P(f);N_SPINS(h)::QAB1(G)
  - Refutation
    - R(m);XQ(G)
- Try
  - Q(G);CHECK,XS(h)
  - Vars
    - K(j);OGATE,P-FLIGHT,P_SPINP(f)::QAR1(G)
  - Refutation
    - R(m);P_SPINR(m),XQ(G)
Actual
- P(D);N_PINS(h),N_SPINS(F)
- Threat
  - S(F),XP(g)
- Vars
  - S(h);CHECK,N_GUARD::S(F),XS(h)
  - P(f);EP,P_PINS(F),P_SPINS(h),XP(D)::QAR1(G)
  - P(g);EP,OGATE,P_PINS(F),P_SPINS(h),XP(D)::QAR(G)
  - R(m);N_GUARD,P_PINP(J)::QAR1(G),XR(m)
  - S(h);N_GUARD::S(F)
  - S(h);N_GUARD,N_SPINB(d)::S(F)
  - P(g);::S(F)

MESON Chess Problem Database