MESON Chess Problem Database

Problem Display
PID: 251610 (3R4/b5p1/1pp3p1/3Np1p1/1P2kp2/K1Q2NRn/BP3rP1/5bBq w - - 0 1)

Sorochan, Vladimir Mikhailovich

Problemas, 2021

3R4/b5p1/1pp3p1/3Np1p1/1P2kp2/K1Q2NRn/BP3rP1/5bBq

#2

11 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Qxe5#
    • 1...Bd3
      • 2.Qxe5#
  • Tries
    • 1.Sxg5+?
      • 1...Kf5
        • 2.Rf8#
      • 1...Sxg5!
    • 1.Se3?
      • threat
        • 2.Qxe5#
      • 1...Rxf3
        • 2.Qxc6#
      • 1...Bb8!
    • 1.Sf6+?
      • 1...Kf5
        • 2.Qxe5#
      • 1...gxf6!
    • 1.Sc7?
      • threat
        • 2.Qxe5#
      • 1...Kf5
        • 2.Qxe5#
      • 1...Rxf3!
    • 1.Se7?
      • threat
        • 2.Qxe5#
      • 1...Rxf3
        • 2.Qxf3#
      • 1...Bb8!
    • 1.Bb1+?
      • 1...Bd3
        • 2.Bxd3#
        • 2.Qxe5#
        • 2.Qxd3#
      • 1...Rc2!
    • 1.Re8?
      • threat
        • 2.Rxe5#
      • 1...Kf5
        • 2.Rxe5#
        • 2.Qxe5#
      • 1...Bb8!
    • 1.Qe1+?
      • 1...Kf5
        • 2.Qxe5#
      • 1...Re2
        • 2.Bb1#
      • 1...Be2
        • 2.Bb1#
      • 1...Kd3!
    • 1.Qd4+?
      • 1...Kf5
        • 2.Qxe5#
      • 1...exd4!
    • 1.Qe3+?
      • 1...Kf5
        • 2.Qxe5#
      • 1...fxe3!
  • Keys
    • 1.Qxc6!
      • threat
        • 2.Qxg6#
      • 1...Rxf3+
        • 2.Se3#
      • 1...Kd3
        • 2.Qc4#
      • 1...Kf5
        • 2.Se7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(e);N_GUARD,S_FLIGHT::QAR1(F),XP(g)
    • B(a);SBLOCK::QAR1(F),XP(g)
  • Tries
    • Try
      • S(G);CHECK,XP(h)
      • Vars
        • K(e);S_CUTS(d),S_FLIGHT::R(K)
      • Refutation
        • S(d);XS(G)
    • Try
      • S(J);
      • Threat
        • QAR1(F),XP(g)
      • Vars
        • R(c);XS(G)::QAB(F),XP(j)
      • Refutation
        • B(l);
    • Try
      • S(J);CHECK
      • Vars
        • K(e);S_FLIGHT::QAR1(F),XP(g)
      • Refutation
        • P(m);XS(J)
    • Try
      • S(J);
      • Threat
        • QAR1(F),XP(g)
      • Vars
        • K(e);S_FLIGHT::QAR1(F),XP(g)
      • Refutation
        • R(c);P_PINQ(F),XS(G)
    • Try
      • S(J);
      • Threat
        • QAR1(F),XP(g)
      • Vars
        • R(c);OGATE,P_PINQ(F),XS(G)::QAB1(F),XR(c)
      • Refutation
        • B(l);
    • Try
      • B(B);CHECK
      • Refutation
        • R(c);P_SPINR(c)
    • Try
      • R(K);P_PINP(g)
      • Threat
        • R1(K),XP(g)
      • Refutation
        • B(l);
    • Try
      • Q(F);CHECK
      • Vars
        • K(e);OGATE,S_FLIGHT::QAR1(F),XP(g)
        • R(c);P_SPINR(c)::B(B)
        • B(a);P_SPINB(a)::B(B)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(e);N_GUARD,S_FLIGHT::QAR1(F),XP(g)
      • Refutation
        • P(g);XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • K(e);OGATE,S_FLIGHT::QAR1(F),XP(g)
      • Refutation
        • P(f);XQ(F)
  • Actual
    • Q(F);XP(j)
    • Threat
      • QAB(F),XP(k)
    • Vars
      • R(c);CHECK,XS(G)::QAB(F)+S(J)
      • K(e);N_GUARD,S_CUTB(a),S_FLIGHT::QAB1(F)
      • K(e);N_GUARD,S_FLIGHT::S(J)
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