MESON Chess Problem Database

Problem Display
PID: 16923 (8/2r4p/Qn1p3P/1B1pB3/R1N3p1/P1pk2P1/1P2Rp2/5K2 w - - 0 1)

Wenman, Francis Percival (aka Percy Wenman)

One Hundred Published Problems, 1944

8/2r4p/Qn1p3P/1B1pB3/R1N3p1/P1pk2P1/1P2Rp2/5K2

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Ra7
      • 2.Sxb6#
    • 1...Rb7
      • 2.Sxb6#
    • 1...Rd7
      • 2.Sxb6#
    • 1...Re7
      • 2.Sxb6#
    • 1...Rf7
      • 2.Sxb6#
    • 1...Rg7
      • 2.Sxb6#
    • 1...cxb2
      • 2.Sxb2#
    • 1...c2
      • 2.Re3#
    • 1...dxe5
      • 2.Sxe5#
  • Tries
    • 1.Bd7?
      • threat
        • 2.Bf5#
      • 1...Rxd7
        • 2.Sxb6#
      • 1...dxe5
        • 2.Sxe5#
      • 1...Sxd7!
    • 1.Qxb6?
      • threat
        • 2.Qe3#
        • 2.Qd4#
      • 1...dxe5
        • 2.Sxe5#
        • 2.Qe3#
      • 1...d4
        • 2.Qxd4#
      • 1...Rc5!
  • Keys
    • 1.Qb7!
      • 1...Rxc4
        • 2.Qxh7#
      • 1...Rxb7
        • 2.Sxb6#
      • 1...Sxa4
        • 2.Qxd5#
      • 1...Sxc4
        • 2.Qxd5#
      • 1...cxb2
        • 2.Sxb2#
      • 1...dxc4
        • 2.Qe4#
      • 1...dxe5
        • 2.Sxe5#
      • 1...Rc5
        • 2.Qxh7#
      • 1...Rc6
        • 2.Qxh7#
      • 1...Rd7
        • 2.Sxb6#
      • 1...Re7
        • 2.Sxb6#
      • 1...Rf7
        • 2.Sxb6#
      • 1...Rg7
        • 2.Sxb6#
      • 1...Rc8
        • 2.Qxh7#
      • 1...Sd7
        • 2.Qxd5#
      • 1...Sa8
        • 2.Qxd5#
      • 1...Sc8
        • 2.Qxd5#
      • 1...c2
        • 2.Re3#
      • 1...d4
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 1
  • Sets
    • R(h);N_GUARD::B(H)+S(G),XS(f)
    • P(b);XP(B)::B(H)+S(G),DCHECK,XP(b)
    • P(b);SBLOCK::R1(C)
    • P(g);XB(I)::B(H)+S(G),DCHECK,XP(g)
  • Tries
    • Try
      • B(H);
      • Threat
        • B(H)
      • Vars
        • R(h);N_GUARD,XB(H)::QAB(J)+S(G),XS(f)
        • P(g);XB(I)::QAB(J)+S(G),DCHECK,XP(g)
      • Refutation
        • S(f);XB(H)
    • Try
      • Q(J);XS(f)
      • Threat
        • DUALS(2)
      • Vars
        • P(e);::QAR1(J),XP(e)
      • Refutation
        • R(h);
  • Actual
    • Q(J);
    • Vars
      • R(h);OGATE,P_SPINR(h),XS(G)::QAB(J),XP(i)
      • R(h);N_GUARD,XQ(J)::B(H)+S(G),XS(f)
      • S(f);N_GUARD,XR(F)::QAR2(J),XP(e)
      • S(f);N_GUARD,P_SPINS(f),XS(G)::QAR2(J),XP(e)
      • P(b);XP(B)::B(H)+S(G),DCHECK,XP(b)
      • P(e);OGATE,P_SPINP(e),XS(G)::QAB1(J)
      • P(g);XB(I)::B(H)+S(G),DCHECK,XP(g)
      • R(h);OGATE::QAB(J),XP(i)
      • R(h);N_GUARD::B(H)+S(G),XS(f)
      • S(f);N_GUARD::QAR2(J),XP(e)
      • P(b);SBLOCK::R1(C)
      • P(e);OGATE::QAB1(J)
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