MESON Chess Problem Database

Problem Display
PID: 237459 (2nQ4/2RN2p1/K2pR3/3p1p2/1BPkP3/3Nprp1/1nPprb2/8 w - - 0 1)

Labai, Zoltan

Pravda, 2010

2nQ4/2RN2p1/K2pR3/3p1p2/1BPkP3/3Nprp1/1nPprb2/8

#2

10 + 13

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sxd3
      • 2.c3#
    • 1...g5
      • 2.Qf6#
      • 2.Qh8#
    • 1...g6
      • 2.Qf6#
      • 2.Qh8#
  • Tries
    • 1.Sf4?
      • threat
        • 2.Sxe2#
        • 2.c3#
      • 1...d1Q
        • 2.c3#
      • 1...d1S
        • 2.Sxe2#
      • 1...d1B
        • 2.c3#
      • 1...Re1
        • 2.c3#
      • 1...Sd1
        • 2.Sxe2#
      • 1...Sa4
        • 2.Sxe2#
      • 1...Rxf4!
    • 1.S7e5?
      • threat
        • 2.Sxf3#
      • 1...Kxe4
        • 2.Sc6#
      • 1...dxe4
        • 2.c3#
      • 1...fxe4
        • 2.c3#
      • 1...dxe5
        • 2.Qxd5#
      • 1...Rf4!
    • 1.Qg5?
      • threat
        • 2.Qxg7#
      • 1...Sxd3
        • 2.c3#
      • 1...fxe4
        • 2.Qxd5#
      • 1...g6
        • 2.Qf6#
      • 1...Sxc4!
  • Keys
    • 1.S7c5!
      • threat
        • 2.Sb3#
      • 1...Kxc4
        • 2.Sb3#
      • 1...dxc4
        • 2.c3#
      • 1...dxc5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • S(a);SBLOCK,XS(B)::P(A)
  • Tries
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);::P(A)
        • P(b);::S(B),XR(c)
        • R(c);::P(A)
        • S(a);::S(B),XR(c)
      • Refutation
        • R(f);XS(B)
    • Try
      • S(I);
      • Threat
        • S(I),XR(f)
      • Vars
        • K(h);P-FLIGHT,XP(E)::R(G)+S(I)
        • P(i);P_SPINP(k),SBLOCK,XP(E)::P(A)
        • P(j);SBLOCK,XP(E)::P(A)
        • P(k);OGATE,P_SPINP(i),XS(I)::QAR1(J),XP(i)
      • Refutation
        • R(f);
    • Try
      • Q(J);
      • Threat
        • QAB(J),XP(l)
      • Vars
        • S(a);SBLOCK,XS(B)::P(A)
        • P(j);OGATE,XP(E)::QAR1(J),XP(i)
        • P(l);N_GUARD::QAB(J)
      • Refutation
        • S(a);XP(D)
  • Actual
    • S(I);
    • Threat
      • S(I)
    • Vars
      • K(h);P-FLIGHT,XP(D)::R(H)+S(I)
      • P(i);P_SPINP(k),SBLOCK,XP(D)::P(A)
      • P(k);OGATE,P_SPINP(i),XS(I)::QAR1(J),XP(i)
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