MESON Chess Problem Database

Problem Display
PID: 79577 (6r1/7N/pp2p3/4kN1R/2Bn1pP1/3Kn3/1B3R2/b3Q3 w - - 0 1)

Touw Hian Bwee

6th HM., Die Schwalbe, 1983

6r1/7N/pp2p3/4kN1R/2Bn1pP1/3Kn3/1B3R2/b3Q3

#2

9 + 9

6352 A Collection of Chess Problems by Touw Hian Bwee 2008

SOLUTION

  • SOUND
  • Sets
    • 1...f3
      • 2.Qxe3#
  • Tries
    • 1.Sxe3+?
      • 1...Rg5
        • 2.Sf5#
      • 1...Kd6!
    • 1.Sd6+?
      • 1...Rg5
        • 2.Sf7#
      • 1...Kxd6!
    • 1.Sh6+?
      • 1...Rg5
        • 2.Sf7#
      • 1...Kd6!
    • 1.Ba3?
      • threat
        • 2.Bd6#
      • 1...Sxf5
        • 2.Qxa1#
      • 1...Rd8
        • 2.Sxd4#
      • 1...Sb5
        • 2.Sg7#
      • 1...exf5!
    • 1.Rxf4?
      • threat
        • 2.Re4#
        • 2.Qxe3#
      • 1...Kxf4
        • 2.Qg3#
      • 1...Rxg4
        • 2.Qxe3#
      • 1...exf5!
    • 1.Qa5+?
      • 1...Sd5
        • 2.Re2#
      • 1...b5
        • 2.Qc7#
      • 1...bxa5!
  • Keys
    • 1.Qb4!
      • threat
        • 2.Qd6#
      • 1...Sxc4
        • 2.Sg7#
      • 1...Sxf5
        • 2.Re2#
      • 1...exf5
        • 2.Qe7#
      • 1...Rd8
        • 2.Sxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • P(d);N_GUARD::QAR2(A),XS(b)
  • Tries
    • Try
      • S(G);CHECK,P_PINS(c),XS(b)
      • Vars
        • R(i);P_SPINR(i)::QAR(A)+S(G)
      • Refutation
        • K(e);N_SPINS(c),S_FLIGHT
    • Try
      • S(G);CHECK
      • Vars
        • R(i);P_SPINR(i)::S(G)
      • Refutation
        • K(e);N_SPINS(b),S_FLIGHT,XS(G)
    • Try
      • S(G);CHECK
      • Vars
        • R(i);P_SPINR(i)::S(G)
      • Refutation
        • K(e);N_SPINS(b),S_FLIGHT
    • Try
      • B(B);
      • Threat
        • B(B)
      • Vars
        • S(c);OGATEB,XS(G)::QAB(A),XB(a)
        • R(i);N_GUARD::R(H)+S(G),XS(c)
        • S(c);N_GUARD::R(H)+S(G)
      • Refutation
        • P(h);P_SPINP(h),XS(G)
    • Try
      • R(C);XP(d)
      • Threat
        • DUALS(2)
      • Vars
        • K(e);N_SPINS(b),OGATEB,S_FLIGHT,XR(C)::QAB1(A)
        • R(i);XP(F)::QAR2(A),XS(b)
      • Refutation
        • P(h);P_SPINP(h),XS(G)
    • Try
      • Q(A);CHECK,N_PINS(b),P_PINS(c)
      • Vars
        • S(b);S_CUTP(g),S_CUTP(g)::R(C)
        • P(g);OGATE,P_SPINP(g)::QAB(A)
      • Refutation
        • P(g);XQ(A)
  • Actual
    • Q(A);N_PINS(b),P_PINS(c)
    • Threat
      • QAB1(A)
    • Vars
      • S(b);N_GUARD,XB(E)::R(H)+S(G)
      • S(b);OGATEB,XS(G)::R(C)
      • P(h);OGATEB,P_SPINP(h),XS(G)::QAR2(A)
      • R(i);N_GUARD::R(H)+S(G),XS(b)
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