MESON Chess Problem Database

Problem Display
PID: 11896 (1r2N3/1PBP4/K2R1R1q/8/p3kP1n/n2p3B/r3bP2/3QN3 w - - 0 1)

Talaber, Laszlo

4th HM., KeyStip 07. Ty., 1973

1r2N3/1PBP4/K2R1R1q/8/p3kP1n/n2p3B/r3bP2/3QN3

#2

12 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Ra8+
      • 2.bxa8Q#
      • 2.bxa8B#
    • 1...Rxe8
      • 2.dxe8Q#
      • 2.dxe8R#
    • 1...Bf3
      • 2.Qxd3#
    • 1...Bg4
      • 2.Qxd3#
    • 1...Bh5
      • 2.Qxd3#
    • 1...d2+
      • 2.Qxe2#
  • Tries
    • 1.Rfe6+?
      • 1...Kxf4
        • 2.Rd5#
      • 1...Qxe6!
    • 1.f3+?
      • 1...Ke3
        • 2.Bb6#
      • 1...Bxf3
        • 2.Qxd3#
      • 1...Sxf3!
  • Keys
    • 1.Rxd3!
      • threat
        • 2.Sd6#
      • 1...Qxf6+
        • 2.Sxf6#
      • 1...Ra8+
        • 2.bxa8Q#
        • 2.bxa8B#
      • 1...Bxd3+
        • 2.Qxd3#
      • 1...Qxf4
        • 2.Rxf4#
      • 1...Rxe8
        • 2.dxe8Q#
        • 2.dxe8R#
      • 1...Qf8
        • 2.Re6#
      • 1...Sc4
        • 2.Rd4#
      • 1...Sb5
        • 2.Re3#
      • 1...Sf5
        • 2.Bxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 4
  • Sets
    • R(i);CHECK,OGATE::PXR(i)=Q
    • R(i);OGATE,XS(L)::PXR(i)=Q
    • B(b);N_GUARD::QAB1(A),XP(d)
    • P(d);CHECK,N_GUARD,S_CUTR(a)::QAR2(A),XB(b)
  • Tries
    • Try
      • R(H);CHECK
      • Vars
        • K(f);P-FLIGHT,XP(E)::B(J)+R(G)
      • Refutation
        • Q(h);P_PINR(G),XR(H)
    • Try
      • P(C);CHECK
      • Vars
        • K(f);P-FLIGHT::B(J)
        • B(b);XP(C)::QAB1(A),XP(d)
      • Refutation
        • S(g);XP(C)
  • Actual
    • R(G);P_SPINR(G),XP(d)
    • Threat
      • S(L)
    • Vars
      • Q(h);CHECK,XR(H)::S(L),XQ(h)
      • R(i);CHECK,OGATE::PXR(i)=Q
      • B(b);CHECK,OGATE,P_PINR(H),XR(G)::QAB1(A),XB(b)
      • Q(h);OGATE,XP(E)::R1(H),XQ(h)
      • R(i);OGATE,XS(L)::PXR(i)=Q
      • Q(h);N_GUARD::R(H)
      • S(c);N_PINR(G),P_PINR(H)::R1(G)
      • S(g);N_GUARD::B(D),XS(g)
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