Meson Chess Problem Database

Andrade, Barry Jack da Costa

Toronto Evening Telegram, 1948

11 + 10

3713	Snap	2009
6490	yacpdb	2009

This anticipates 103537(1955)

Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 2
Sets
- R(g);P_PINB(I),P_SPINR(h)::S(G)
- R(g);P_PINB(I),P_SPINR(h),XR(J)::S(G)
- R(h);P_SPINR(g)::R(J)
- R(h);XR(E)::R(J)
- R(h);P_SPINR(g)::S(G)
- R(h);OGATE,P_SPINR(g)::B(A)
- B(j);SBLOCK,S_CUTR(g)::S(G)
Tries
- Try
  - S(G);CHECK
  - Vars
    - R(h);P_SPINR(g),XS(G)::R(J)
  - Refutation
    - K(f);P-FLIGHT,P_SPINR(g)
- Try
  - R(E);P_PINR(g),XR(h)
  - Threat
    - QAR(C)
  - Vars
    - B(j);SBLOCK::S(G)
  - Refutation
    - Q(a);N_SPINR(g),XR(E)
- Try
  - R(J);CHECK,XR(g)
  - Vars
    - R(h);P_SPINR(h),XR(J)::S(G)
  - Refutation
    - B(b);P_PINB(I),XR(J)
- Try
  - R(J);
  - Threat
    - R1(J)
  - Vars
    - R(g);P_PINB(I),P_SPINR(h),XR(J)::S(G)
    - B(j);SBLOCK,XR(J)::S(G)
    - R(h);P_SPINR(g)::S(G)
  - Refutation
    - K(f);P_SPINR(h),S_FLIGHT,XR(J)
Actual
- R(E);
- Threat
  - QAR(C)
- Vars
  - R(g);P_PINB(I),P_SPINR(h),XR(J)::S(G)
  - R(g);P_PINB(I),P_SPINR(h)::S(G)
  - R(h);::R(J)
  - R(h);P_SPINR(g)::S(G)
  - R(h);OGATE,P_SPINR(g)::B(A)
  - B(j);SBLOCK,S_CUTR(g)::S(G)

MESON Chess Problem Database