MESON Chess Problem Database

Problem Display
PID: 243641 (4R3/6K1/5R1p/3PNN1p/2P1k3/4q1P1/1pn2Bp1/1bb1Q1n1 w - - 0 1)

Balcu, Silviu

Revista Romana de Sah, 1963

4R3/6K1/5R1p/3PNN1p/2P1k3/4q1P1/1pn2Bp1/1bb1Q1n1

#2

10 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe1
      • 2.Sd6#
    • 1...Qe2
      • 2.Sd6#
    • 1...Sd4
      • 2.Sd6#
  • Tries
    • 1.Sd3+?
      • 1...Kf3
        • 2.Sxe3#
      • 1...Kxd3!
    • 1.Sf3+?
      • 1...Kxf3
        • 2.Sxe3#
      • 1...Kd3!
    • 1.Sg4+?
      • 1...Kf3
        • 2.Sh2#
        • 2.Sfxe3#
      • 1...Kd3!
    • 1.Sc6+?
      • 1...Kf3
        • 2.Sxe3#
      • 1...Kd3!
    • 1.Sg6+?
      • 1...Kf3
        • 2.Sxe3#
      • 1...Kd3!
    • 1.Sd7+?
      • 1...Kf3
        • 2.Sxe3#
      • 1...Kd3!
    • 1.Sf7+?
      • 1...Kf3
        • 2.Sxe3#
      • 1...Kd3!
    • 1.Qe2?
      • threat
        • 2.Sd3#
        • 2.Sf3#
        • 2.Sg4#
        • 2.Sc6#
        • 2.Sg6#
        • 2.Sd7#
        • 2.Sf7#
      • 1...Qxe2
        • 2.Sd6#
      • 1...Sf3
        • 2.Sxf3#
      • 1...Sd4
        • 2.Sd6#
      • 1...Sxe2!
  • Keys
    • 1.Qc3!
      • threat
        • 2.Sd6#
      • 1...Qg5+
        • 2.Sg6#
      • 1...Qa7+
        • 2.Sd7#
      • 1...Qxg3+
        • 2.Sxg3#
      • 1...Qc5
        • 2.Qd3#
      • 1...Qb6
        • 2.Sc6#
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • Q(g);N_SPINQ(g),XQ(A)::S(G)
    • Q(g);::S(G)
    • S(e);SBLOCK::S(G)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(h);N_SPINQ(g),S_FLIGHT::R(H)+S(G),XQ(g)
      • Refutation
        • K(h);N_SPINQ(g),S_FLIGHT,XS(F)
    • Try
      • S(F);CHECK
      • Vars
        • K(h);N_SPINQ(g),S_FLIGHT,XS(F)::R(H)+S(G),XQ(g)
      • Refutation
        • K(h);N_SPINQ(g),S_FLIGHT
    • Try
      • S(F);CHECK
      • Refutation
        • K(h);N_SPINQ(g),S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(h);N_SPINQ(g),S_FLIGHT::R(H)+S(G),XQ(g)
      • Refutation
        • K(h);N_SPINQ(g),S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(h);N_SPINQ(g),S_FLIGHT::R(H)+S(G),XQ(g)
      • Refutation
        • K(h);N_SPINQ(g),S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(h);N_SPINQ(g),S_FLIGHT::R(H)+S(G),XQ(g)
      • Refutation
        • K(h);N_SPINQ(g),S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(h);N_SPINQ(g),S_FLIGHT::R(H)+S(G),XQ(g)
      • Refutation
        • K(h);N_SPINQ(g),S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(7)
      • Vars
        • Q(g);N_SPINQ(g),XQ(A)::S(G)
        • S(c);::R(J)+S(F),XS(c)
        • S(e);SBLOCK::S(G)
      • Refutation
        • S(c);N_SPINQ(g),XQ(A)
  • Actual
    • Q(A);N_PINQ(g)
    • Threat
      • S(G)
    • Vars
      • Q(g);CHECK::R(J)+S(F)
      • Q(g);CHECK,XP(C)::S(G),XQ(g)
      • Q(g);N_GUARD::QAB1(A)
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