MESON Chess Problem Database

Problem Display
PID: 99427 (q1r5/P1B5/N2pPR2/1P1kP3/1Q6/3N3p/K4Rr1/n5nB w - - 0 1)

Tanic, Zivota

Magyar Sakkelet, 1990

q1r5/P1B5/N2pPR2/1P1kP3/1Q6/3N3p/K4Rr1/n5nB

#2

12 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc7
      • 2.Sxc7#
  • Tries
    • 1.Sac5?
      • threat
        • 2.Qe4#
      • 1...dxc5
        • 2.Sf4#
      • 1...Qxa7+!
    • 1.Bxg2+?
      • 1...Sf3
        • 2.Bxf3#
      • 1...hxg2!
    • 1.Re2?
      • threat
        • 2.Sf4#
        • 2.Qe4#
      • 1...dxe5
        • 2.Qc5#
        • 2.Qe4#
      • 1...Sxe2!
    • 1.Rf4?
      • threat
        • 2.Qxd6#
        • 2.Qc4#
      • 1...Kxe6
        • 2.Qxd6#
      • 1...Rxc7
        • 2.Sxc7#
        • 2.Qxd6#
      • 1...dxe5
        • 2.Qd6#
        • 2.Qc4#
      • 1...Rd8
        • 2.Qc4#
      • 1...Qc6!
    • 1.Rf5?
      • threat
        • 2.Sf4#
      • 1...Kxe6
        • 2.Qxd6#
      • 1...Se2!
    • 1.Qf4?
      • threat
        • 2.Sdb4#
        • 2.Sab4#
      • 1...Qxa7
        • 2.Sb4#
      • 1...Sc2!
  • Keys
    • 1.Sdc5!
      • threat
        • 2.Qe4#
      • 1...Kxe5
        • 2.Rf5#
      • 1...dxc5
        • 2.Rd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(h);XB(L)::S(H),XR(h)
  • Tries
    • Try
      • S(H);P_SPINP(K)
      • Threat
        • QAB1(E)
      • Vars
        • P(f);XS(H)::S(D)
      • Refutation
        • Q(g);CHECK,XP(K)
    • Try
      • B(A);CHECK,N_SPINR(C),XR(c)
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::B(A),XS(b)
      • Refutation
        • P(d);XB(A)
    • Try
      • R(C);
      • Threat
        • DUALS(2)
      • Refutation
        • S(b);XR(C)
    • Try
      • R(J);
      • Threat
        • DUALS(2)
      • Vars
        • K(e);N_SPINR(c),S_FLIGHT,XP(I)::QAR1(E),XP(f)
        • R(h);::QAB1(E)
      • Refutation
        • Q(g);
    • Try
      • R(J);
      • Threat
        • S(D)
      • Vars
        • K(e);N_SPINR(c),S_FLIGHT,XP(I)::QAR1(E),XP(f)
      • Refutation
        • S(b);N_PINR(C)
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • Q(g);P_PINS(H),XP(K)::S(D)
      • Refutation
        • S(a);N_PINR(C)
  • Actual
    • S(D);
    • Threat
      • QAB1(E)
    • Vars
      • K(e);N_SPINR(c),OGATEB,P-FLIGHT,P_SPINP(f),XP(G)::R1(J)
      • P(f);XS(D)::R(C)
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