MESON Chess Problem Database

Problem Display
PID: 52384 (8/2r1n1PK/2rbQ3/8/4Nk2/5P2/3P3P/2Bb2N1 w - - 0 1)

Kish, Alexander

1st HM., American Chess Bulletin (P 1-2 Ty.), 1935-1936

8/2r1n1PK/2rbQ3/8/4Nk2/5P2/3P3P/2Bb2N1

#2

9 + 6

5064 100 Years of the American Two-move Chess Problem 1962

SOLUTION

  • SOUND
  • Sets
    • 1...Rc3
      • 2.dxc3#
    • 1...Bc2
      • 2.d3#
      • 2.d4#
    • 1...Bxf3
      • 2.Sh3#
    • 1...Bc5
      • 2.d4#
    • 1...Be5
      • 2.Qg4#
    • 1...Sg6
      • 2.Qf6#
    • 1...Sc8
      • 2.Qf6#
  • Tries
    • 1.Sf2?
      • threat
        • 2.Sfh3#
      • 1...Bc2+
        • 2.d3#
      • 1...Kg5!
    • 1.Sg5?
      • threat
        • 2.S1h3#
        • 2.S5h3#
      • 1...Bc2+
        • 2.d3#
      • 1...Kxg5!
    • 1.Sxd6?
      • threat
        • 2.Qe3#
      • 1...Bc2+
        • 2.d3#
      • 1...Kg5
        • 2.Qh6#
      • 1...Bxf3
        • 2.Sh3#
      • 1...Rc3
        • 2.dxc3#
      • 1...Sd5
        • 2.Qf5#
      • 1...Sf5
        • 2.Qxf5#
      • 1...Rxd6!
    • 1.Qh6+?
      • 1...Kf5
        • 2.Qf6#
      • 1...Ke5!
  • Keys
    • 1.Sg3!
      • threat
        • 2.Qe3#
      • 1...Bc2+
        • 2.d3#
      • 1...Kg5
        • 2.Qh6#
      • 1...Bxf3
        • 2.Sh3#
      • 1...Rc3
        • 2.dxc3#
      • 1...Bc5
        • 2.d4#
      • 1...Be5
        • 2.Qg4#
      • 1...Sd5
        • 2.Qf5#
      • 1...Sf5
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • R(c);OGATE::B(A)+P(C),XR(c)
    • B(a);SBLOCK,XP(E)::S(B)
    • B(d);S_CUTR(c)::B(A)+P(C)
    • B(d);SBLOCK::QAR1(G)
    • S(f);N_GUARD,P_PINP(H)::QAR2(G)
  • Tries
    • Try
      • S(F);
      • Threat
        • S(F)
      • Vars
        • B(a);CHECK,S_CUTR(c)::B(A)+P(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(F);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);CHECK,S_CUTR(c)::B(A)+P(C)
      • Refutation
        • K(b);S_FLIGHT,XS(F)
    • Try
      • S(F);XB(d)
      • Threat
        • QAB1(G)
      • Vars
        • B(a);CHECK,S_CUTR(c)::B(A)+P(C)
        • K(b);S_FLIGHT::QAB1(G)
        • B(a);SBLOCK,XP(E)::S(B)
        • R(c);OGATE::B(A)+P(C),XR(c)
        • S(f);N_GUARD,P_PINP(H)::QAR1(G)
        • S(f);N_GUARD,P_PINP(H)::QAR1(G),XS(f)
      • Refutation
        • R(c);XS(F)
    • Try
      • Q(G);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(G)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(F);
    • Threat
      • QAB1(G)
    • Vars
      • B(a);CHECK,S_CUTR(c)::B(A)+P(C)
      • K(b);S_FLIGHT::QAB1(G)
      • B(a);SBLOCK,XP(E)::S(B)
      • R(c);OGATE::B(A)+P(C),XR(c)
      • B(d);S_CUTR(c)::B(A)+P(C)
      • B(d);SBLOCK::QAR1(G)
      • S(f);N_GUARD,P_PINP(H)::QAR1(G)
      • S(f);N_GUARD,P_PINP(H)::QAR1(G),XS(f)
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