MESON Chess Problem Database

Problem Display
PID: 278182 (8/1Q1N4/8/p2P1P2/2nk4/1PrP1R1K/1P2P3/8 w - - 0 1)

Popa, Nicolae

Phenix, 2007

8/1Q1N4/8/p2P1P2/2nk4/1PrP1R1K/1P2P3/8

#2

10 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Se3
      • 2.Rf4#
  • Tries
    • 1.Qc6?
      • threat
        • 2.Qc5#
      • 1...Rxd3
        • 2.Qxc4#
      • 1...Sd2
        • 2.bxc3#
      • 1...Sa3
        • 2.bxc3#
      • 1...Se3
        • 2.Rf4#
        • 2.bxc3#
      • 1...Se5
        • 2.bxc3#
      • 1...Sb6
        • 2.bxc3#
      • 1...Sd6
        • 2.bxc3#
      • 1...Sxb2!
    • 1.Qb4?
      • threat
        • 2.Qc5#
      • 1...Kxd5
        • 2.Qc5#
      • 1...Rxd3
        • 2.Qxc4#
      • 1...axb4!
    • 1.Qb6+?
      • 1...Kxd5
        • 2.Qc5#
        • 2.e4#
      • 1...Sxb6!
    • 1.Qa7+?
      • 1...Kxd5
        • 2.Qc5#
      • 1...Sb6!
    • 1.Qc7?
      • threat
        • 2.Qc5#
      • 1...Kxd5
        • 2.Qc5#
      • 1...Rxd3
        • 2.Qxc4#
      • 1...Sxb2
        • 2.Qe5#
      • 1...Sd2
        • 2.Qe5#
      • 1...Sa3
        • 2.Qe5#
      • 1...Se3
        • 2.Qe5#
      • 1...Se5
        • 2.Qxe5#
      • 1...Sb6
        • 2.Qe5#
      • 1...Sd6!
  • Keys
    • 1.Qb5!
      • threat
        • 2.Qc5#
      • 1...Rxd3
        • 2.Qxc4#
      • 1...Sxb2
        • 2.e3#
      • 1...Sd2
        • 2.e3#
      • 1...Sa3
        • 2.e3#
      • 1...Se3
        • 2.Rf4#
      • 1...Se5
        • 2.e3#
      • 1...Sb6
        • 2.e3#
      • 1...Sd6
        • 2.e3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • S(b);SBLOCK::R(E)
  • Tries
    • Try
      • Q(I);
      • Threat
        • QAB1(I)
      • Vars
        • R(a);N_GUARD,P_PINR(E),XP(D)::QAR1(I),XS(b)
        • S(b);::P(A),XR(a)
      • Refutation
        • S(b);XP(A)
    • Try
      • Q(I);P_PINS(b)
      • Threat
        • QAB1(I)
      • Vars
        • K(c);N_SPINS(b),P-FLIGHT,XP(G)::QAR1(I)
        • R(a);N_GUARD,P_PINR(E),XP(D)::QAR1(I),XS(b)
      • Refutation
        • P(d);N_SPINS(b),XQ(I)
    • Try
      • Q(I);CHECK
      • Refutation
        • S(b);XQ(I)
    • Try
      • Q(I);CHECK
      • Vars
        • K(c);P-FLIGHT,XP(G)::QAR1(I)
      • Refutation
        • S(b);P_SPINS(b)
    • Try
      • Q(I);
      • Threat
        • QAB1(I)
      • Vars
        • K(c);P-FLIGHT,XP(G)::QAR1(I)
        • R(a);N_GUARD,P_PINR(E),XP(D)::QAR1(I),XS(b)
        • S(b);N_GUARD,XP(A)::QAB1(I)
        • S(b);N_GUARD::QAB1(I)
        • S(b);N_GUARD::QAB1(I),XS(b)
      • Refutation
        • S(b);
  • Actual
    • Q(I);
    • Threat
      • QAB1(I)
    • Vars
      • R(a);N_GUARD,P_PINR(E),XP(D)::QAR1(I),XS(b)
      • S(b);N_GUARD,XP(A)::P(B)
      • S(b);N_GUARD::P(B)
      • S(b);SBLOCK::R(E)
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