MESON Chess Problem Database

Problem Display
PID: 67918 (1B2Rn2/1NqR4/2NnP1p1/1Ppk1p2/p2P1P2/5P2/4Q3/2K5 w - - 0 1)

Tominic, Ivo

1st HM., Mat 05. TT, 1977

1B2Rn2/1NqR4/2NnP1p1/1Ppk1p2/p2P1P2/5P2/4Q3/2K5

#2

12 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qa5
      • 2.Rxd6#
    • 1...Qb6
      • 2.Rxd6#
    • 1...Qxb7
      • 2.Rxd6#
    • 1...Qc8
      • 2.Rxd6#
    • 1...Sxe6
      • 2.Qxe6#
    • 1...cxd4
      • 2.Qa2#
    • 1...c4
      • 2.Qe5#
  • Tries
    • 1.Sb4+?
      • 1...Kxd4
        • 2.Qd3#
      • 1...cxb4+!
    • 1.Sba5?
      • threat
        • 2.Qc4#
        • 2.Qe5#
      • 1...Qxa5
        • 2.Rxd6#
      • 1...Qxd7
        • 2.Qe5#
      • 1...c4
        • 2.Qxc4#
        • 2.Qe5#
      • 1...Sxd7!
    • 1.Sxd6?
      • threat
        • 2.Qc4#
        • 2.Qe5#
      • 1...Qxd6
        • 2.Rxd6#
      • 1...c4
        • 2.Qxc4#
        • 2.Qe5#
      • 1...Sxd7!
    • 1.dxc5?
      • threat
        • 2.Qd3#
        • 2.Qa2#
      • 1...Qxc6
        • 2.Qd3#
      • 1...Qxd7
        • 2.Qd3#
      • 1...Sxe6
        • 2.Qa2#
        • 2.Qxe6#
      • 1...Sxd7
        • 2.Qd3#
      • 1...Qxb7!
  • Keys
    • 1.Qd3!
      • threat
        • 2.dxc5#
      • 1...Qxb7
        • 2.Rxd6#
      • 1...Sxe6
        • 2.Se7#
      • 1...cxd4
        • 2.Qxd4#
      • 1...c4
        • 2.Sb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • Q(g);N_GUARD::R1(J),XS(e)
    • Q(g);N_GUARD,XS(I)::R1(J),XS(e)
    • S(h);OGATE,XP(H)::QAB1(B),XS(h)
    • P(b);N_GUARD,P_PINS(G),XP(D)::QAB(B)
    • P(b);SBLOCK::QAR1(B)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(c);P-FLIGHT,XP(D)::QAR1(B)
      • Refutation
        • P(b);CHECK,XS(G)
    • Try
      • S(I);
      • Threat
        • DUALS(2)
      • Vars
        • Q(g);N_GUARD,XS(I)::R1(J),XS(e)
        • Q(g);N_SPINS(e),XR(J)::QAR1(B)
      • Refutation
        • S(h);N_SPINS(e),XR(J)
    • Try
      • S(I);XS(e)
      • Threat
        • DUALS(2)
      • Vars
        • Q(g);OGATE,P_SPINQ(g),XS(I)::R1(J),XQ(g)
      • Refutation
        • S(h);XR(J)
    • Try
      • P(D);XP(b)
      • Threat
        • DUALS(2)
      • Vars
        • Q(g);P_PINP(D),XS(G)::QAR2(B)
        • Q(g);N_SPINS(e),XR(J)::QAR2(B)
        • S(h);N_SPINS(e),XR(J)::QAR2(B)
      • Refutation
        • Q(g);XS(I)
  • Actual
    • Q(B);
    • Threat
      • QAR(B)+P(D),XP(b)
    • Vars
      • Q(g);N_GUARD,XS(I)::R1(J),XS(e)
      • S(h);SBLOCK,XP(H)::S(G)
      • P(b);OGATE,P_PINS(G),P_SPINP(b),XP(D)::QAR1(B),XP(b)
      • P(b);N_GUARD::S(G)
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