MESON Chess Problem Database

Problem Display
PID: 278030 (6K1/n1p5/B1P1Np2/5P2/4kB2/1pppN2Q/2q3R1/1n6 w - - 0 1)

Vinagre, Jose Casimiro

Phenix, 2006

6K1/n1p5/B1P1Np2/5P2/4kB2/1pppN2Q/2q3R1/1n6

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qxg2+
      • 2.Qxg2#
  • Tries
    • 1.Sxc2?
      • threat
        • 2.Qxd3#
      • 1...Kd5
        • 2.Qf3#
      • 1...dxc2
        • 2.Qd3#
      • 1...d2
        • 2.Qd3#
      • 1...Sb5!
    • 1.Sd5?
      • threat
        • 2.Sxf6#
      • 1...Kxd5
        • 2.Qf3#
      • 1...Qxg2+!
    • 1.Sc5+?
      • 1...Kxf4
        • 2.Qg3#
      • 1...Kd4!
    • 1.Bc4?
      • threat
        • 2.Bd5#
      • 1...Qxg2+
        • 2.Qxg2#
      • 1...d2!
    • 1.Qh1?
      • threat
        • 2.Rxc2#
        • 2.Rd2#
        • 2.Re2#
        • 2.Rf2#
      • 1...Qxg2+
        • 2.Qxg2#
      • 1...Kf3
        • 2.Rxc2#
        • 2.Rd2#
      • 1...Qc1
        • 2.Rg1#
      • 1...Qa2
        • 2.Rxa2#
        • 2.Rb2#
        • 2.Rc2#
        • 2.Rd2#
        • 2.Re2#
        • 2.Rf2#
      • 1...Qb2
        • 2.Rxb2#
        • 2.Rc2#
        • 2.Rd2#
        • 2.Re2#
        • 2.Rf2#
      • 1...Qd2
        • 2.Rxd2#
        • 2.Re2#
        • 2.Rf2#
      • 1...Qe2
        • 2.Rxe2#
      • 1...Qf2
        • 2.Rxf2#
      • 1...Sd2
        • 2.Rxd2#
      • 1...d2
        • 2.Rg1#
        • 2.Rxd2#
        • 2.Re2#
        • 2.Rf2#
        • 2.Rh2#
        • 2.Rg3#
        • 2.Rg4#
        • 2.Rg5#
        • 2.Rg6#
        • 2.Rg7#
      • 1...Qd1!
  • Keys
    • 1.Sg4!
      • threat
        • 2.Sxf6#
      • 1...Kd5
        • 2.Qf3#
      • 1...Kxf5
        • 2.Sf2#
      • 1...Qxg2
        • 2.Qxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(b);CHECK,OGATE,XR(A)::QAB(C),XQ(b)
  • Tries
    • Try
      • S(B);XQ(b)
      • Threat
        • QAB1(C),XP(e)
      • Vars
        • K(f);N_GUARD,S_FLIGHT::QAB(C)
        • P(e);XS(B)::QAB1(C)
        • P(e);::QAB1(C)
      • Refutation
        • S(h);
    • Try
      • S(B);
      • Threat
        • S(B),XP(g)
      • Vars
        • K(f);N_GUARD,S_FLIGHT,XS(B)::QAB(C)
      • Refutation
        • Q(b);CHECK,XR(A)
    • Try
      • S(H);CHECK
      • Vars
        • K(f);N_GUARD,P-FLIGHT,XB(D)::QAB1(C)
      • Refutation
        • K(f);P-FLIGHT
    • Try
      • B(F);
      • Threat
        • B(F)
      • Vars
        • Q(b);CHECK,OGATE,XR(A)::QAB(C),XQ(b)
      • Refutation
        • P(e);
    • Try
      • Q(C);
      • Threat
        • DUALS(4)
      • Vars
        • Q(b);CHECK,OGATE,P_SPINQ(b),XR(A)::QAB(C),XQ(b)
        • Q(b);N_GUARD::QAB(C)+R(A)
        • Q(b);::QAB(C)+R(A),XQ(b)
        • S(a);::QAB(C)+R(A),XS(a)
      • Refutation
        • Q(b);
  • Actual
    • S(B);
    • Threat
      • S(B),XP(g)
    • Vars
      • K(f);N_GUARD,S_FLIGHT::QAB(C)
      • K(f);N_GUARD,S_CUTQ(b),S_FLIGHT,XP(E)::QAB(C)+S(B)
      • Q(b);N_GUARD,P_PINS(B),XR(A)::QAB1(C),XP(e)
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