MESON Chess Problem Database

Problem Display
PID: 231841 (1bK4B/1pP2Q2/p5pp/2p1P3/B2Nk1p1/2P3RP/3pp1P1/3br2r w - - 0 1)

Schneider, M?

Schweizerische Schachzeitung, 1987

1bK4B/1pP2Q2/p5pp/2p1P3/B2Nk1p1/2P3RP/3pp1P1/3br2r

#2

11 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Bc2
      • 2.Bxc2#
    • 1...gxh3
      • 2.Qf3#
    • 1...b6
      • 2.Bc6#
  • Tries
    • 1.Sc2?
      • threat
        • 2.Re3#
      • 1...Bxc2
        • 2.Bxc2#
      • 1...Rxh3!
    • 1.Sb3?
      • threat
        • 2.Sxd2#
        • 2.Sxc5#
      • 1...Ba7
        • 2.Sxd2#
      • 1...c4
        • 2.Sxd2#
        • 2.Sc5#
      • 1...b6
        • 2.Sxd2#
        • 2.Bc6#
      • 1...Bxb3!
    • 1.Sf5?
      • threat
        • 2.Sd6#
      • 1...Kf4
        • 2.Rxg4#
      • 1...gxf5
        • 2.Qc4#
      • 1...Bxc7!
    • 1.Se6?
      • threat
        • 2.Sxc5#
      • 1...Kd5
        • 2.Sg5#
      • 1...c4
        • 2.Sc5#
      • 1...b6
        • 2.Bc6#
      • 1...Ba7!
    • 1.Rxg4+?
      • 1...Ke3
        • 2.Qf3#
      • 1...Kd3!
    • 1.Qxg6+?
      • 1...Kf4
        • 2.Qxg4#
      • 1...Kd5!
  • Keys
    • 1.Sf3!
      • threat
        • 2.Sxd2#
      • 1...Kd3
        • 2.Sg5#
      • 1...Ke3
        • 2.Sg5#
      • 1...gxf3
        • 2.Qxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • B(a);N_GUARD::B(E),XB(a)
    • P(g);N_GUARD,XP(D)::QAB1(I)
    • P(l);N_GUARD::B(E)
  • Tries
    • Try
      • S(F);
      • Threat
        • R1(C)
      • Vars
        • B(a);OGATE,XS(F)::B(E),XB(a)
      • Refutation
        • R(c);XP(D)
    • Try
      • S(F);
      • Threat
        • DUALS(2)
      • Vars
        • B(m);::S(F),XP(d)
      • Refutation
        • B(a);XS(F)
    • Try
      • S(F);
      • Threat
        • S(F)
      • Vars
        • K(f);P-FLIGHT::R1(C),XP(g)
        • P(j);SBLOCK,XS(F)::QAR2(I)
      • Refutation
        • B(m);XP(H)
    • Try
      • S(F);
      • Threat
        • S(F),XP(h)
      • Vars
        • K(f);S_FLIGHT::QAB(I)+S(F)
        • P(h);::S(F)
        • P(l);N_GUARD::B(E)
      • Refutation
        • B(m);
    • Try
      • R(C);CHECK,XP(g)
      • Vars
        • K(f);P-FLIGHT::QAR1(I)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • Q(I);CHECK,XP(j)
      • Vars
        • K(f);P-FLIGHT::QAR1(I),XP(g)
      • Refutation
        • K(f);S_FLIGHT
  • Actual
    • S(F);
    • Threat
      • S(F),XP(d)
    • Vars
      • K(f);S_FLIGHT::R(C)+S(F)
      • K(f);P-FLIGHT::R(C)+S(F)
      • P(g);OGATE,XS(F)::QAB1(I),XP(g)
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