MESON Chess Problem Database

Problem Display
PID: 93730 (B6r/1R6/8/3pp1R1/3Nkpp1/7P/2P1p2P/1K1NQ3 w - - 0 1)

Bosak, Juraj

Sachove umeni (Ceskoslovensky sach), 1954

B6r/1R6/8/3pp1R1/3Nkpp1/7P/2P1p2P/1K1NQ3

#2

10 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd4
      • 2.Qb4#
    • 1...f3
      • 2.Rxg4#
    • 1...exd4
      • 2.Qxe2#
  • Tries
    • 1.Sb3?
      • threat
        • 2.Qxe2#
      • 1...Kf3
        • 2.Qh1#
      • 1...d4
        • 2.Rb8#
      • 1...f3
        • 2.Rb4#
      • 1...Rxh3!
    • 1.Sf5?
      • threat
        • 2.Qxe2#
      • 1...Kf3
        • 2.Qh1#
      • 1...d4
        • 2.Rb8#
      • 1...f3
        • 2.Rb4#
      • 1...Rxh3!
    • 1.Se6?
      • threat
        • 2.Qxe2#
      • 1...Kf3
        • 2.Qh1#
      • 1...d4
        • 2.Rb8#
      • 1...f3
        • 2.Rb4#
      • 1...Rxh3!
    • 1.Rxe5+?
      • 1...Kxd4
        • 2.Qc3#
      • 1...Kxe5!
    • 1.Rb4?
      • threat
        • 2.Qxe2#
      • 1...f3
        • 2.Sxe2#
        • 2.Sb3#
        • 2.Sb5#
        • 2.Sf5#
        • 2.Se6#
        • 2.Rxg4#
      • 1...Rxh3!
    • 1.Qh1+?
      • 1...f3
        • 2.Rxg4#
      • 1...Kxd4!
  • Keys
    • 1.Sf3!
      • threat
        • 2.Qxe2#
      • 1...Kxf3
        • 2.Qh1#
      • 1...gxf3
        • 2.Rb4#
      • 1...d4
        • 2.Rb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • K(b);N_SPINP(a),OGATEB,P-FLIGHT,XS(G)::QAR2(C)
    • P(c);OGATEB::R(H),XP(d)
    • P(f);SBLOCK,XS(G)::QAR2(C),XP(a)
  • Tries
    • Try
      • S(G);
      • Threat
        • QAR2(C),XP(a)
      • Vars
        • K(b);N_SPINP(a),S_FLIGHT::QAB(C)
        • P(e);OGATEB::B(J)+R(I)
        • P(c);SBLOCK::R(I)
      • Refutation
        • R(g);XP(F)
    • Try
      • S(G);
      • Threat
        • QAR2(C),XP(a)
      • Vars
        • K(b);N_SPINP(a),S_FLIGHT::QAB(C)
        • P(e);OGATEB::B(J)+R(I)
        • P(c);SBLOCK::R(I)
      • Refutation
        • R(g);XP(F)
    • Try
      • S(G);
      • Threat
        • QAR2(C),XP(a)
      • Vars
        • K(b);N_SPINP(a),S_FLIGHT::QAB(C)
        • P(e);OGATEB::B(J)+R(I)
        • P(c);SBLOCK::R(I)
      • Refutation
        • R(g);XP(F)
    • Try
      • R(H);CHECK,XP(f)
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT,XS(G)::QAB1(C)
      • Refutation
        • K(b);P-FLIGHT,XR(H)
    • Try
      • R(I);
      • Threat
        • QAR2(C),XP(a)
      • Refutation
        • R(g);XP(F)
    • Try
      • Q(C);CHECK,N_PINP(a)
      • Vars
        • P(c);P_SPINP(c)::R(H),XP(d)
      • Refutation
        • K(b);P-FLIGHT,XS(G)
  • Actual
    • S(G);
    • Threat
      • QAR2(C),XP(a)
    • Vars
      • K(b);N_SPINP(a),OGATEB,S_FLIGHT,XS(G)::QAB(C)
      • P(d);SBLOCK,XS(G)::R(I)
      • P(e);OGATEB::B(J)+R(I)
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