MESON Chess Problem Database

Problem Display
PID: 168940 (7b/1K1Qp3/3p4/2pkP2R/1p2N1p1/4P3/b1B1P1q1/N1R5 w - - 0 1)

Murashev, Pavel Aleksandrovich

1st Comm., SuperProblem, 2014

7b/1K1Qp3/3p4/2pkP2R/1p2N1p1/4P3/b1B1P1q1/N1R5

#2

10 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Bb3#
    • 1...c4
      • 2.Rd1#
  • Tries
    • 1.Sxd6?
      • threat
        • 2.Rd1#
      • 1...Qxe2
        • 2.Be4#
      • 1...exd6
        • 2.Qf7#
      • 1...c4
        • 2.Se4#
      • 1...Qf1
        • 2.Be4#
      • 1...Qe4
        • 2.Bxe4#
      • 1...Qg1
        • 2.Be4#
      • 1...Bc4
        • 2.Se4#
        • 2.Sb5#
        • 2.Sf7#
        • 2.Sc8#
        • 2.Se8#
      • 1...Qh1!
    • 1.Sf6+?
      • 1...Kc4+
        • 2.Be4#
      • 1...exf6
        • 2.Qf7#
      • 1...Bxf6!
    • 1.Rh6?
      • threat
        • 2.Qe6#
      • 1...Kc4
        • 2.Bb3#
      • 1...Kxe5
        • 2.Rh5#
      • 1...e6
        • 2.Qxe6#
      • 1...Bf6!
    • 1.Qc6+?
      • 1...Kc4
        • 2.Bb1#
        • 2.Bd1#
        • 2.Bb3#
        • 2.Bd3#
        • 2.Ba4#
      • 1...Ke6!
    • 1.Qxd6+?
      • 1...Kc4
        • 2.Bd3#
        • 2.Ba4#
        • 2.Qxc5#
        • 2.Qd3#
      • 1...exd6!
    • 1.exd6+?
      • 1...Kc4
        • 2.Bb3#
        • 2.Bd3#
        • 2.Rxc5#
      • 1...e5
        • 2.Qf7#
      • 1...Be5!
    • 1.e6+?
      • 1...Kc4
        • 2.Bb3#
        • 2.Bd3#
      • 1...Be5!
  • Keys
    • 1.Sg5!
      • threat
        • 2.Qe6#
      • 1...Kc4+
        • 2.Be4#
      • 1...Kxe5+
        • 2.Se4#
      • 1...c4
        • 2.Qb5#
      • 1...e6
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(f);N_SPINP(g),P_PINS(F),S_FLIGHT::R(B)+B(C),DCHECK
    • P(e);SBLOCK::R(B)
  • Tries
    • Try
      • S(F);XP(g)
      • Threat
        • R(B)
      • Vars
        • Q(b);N_GUARD,XP(D)::B(C)
        • P(h);OGATE,P_SPINP(h),XS(F)::QAB(J)
        • P(e);SBLOCK::QAR(J)+S(F)
        • Q(b);N_GUARD::B(C)
        • Q(b);N_GUARD::B(C),XQ(b)
      • Refutation
        • Q(b);
    • Try
      • S(F);CHECK
      • Vars
        • K(f);CHECK,N_SPINP(g),S_FLIGHT::R(B)+B(C)
        • P(h);OGATE,XS(F)::QAB(J)
      • Refutation
        • B(i);XS(F)
    • Try
      • R(H);
      • Threat
        • QAB1(J)
      • Vars
        • K(f);N_SPINP(g),P_PINS(F),S_FLIGHT::R(B)+B(C),DCHECK
        • K(f);N_SPINP(g),OGATEB,P-FLIGHT,P_PINS(F),XP(G)::R(H)
        • P(h);::QAB1(J),XP(h)
      • Refutation
        • B(i);
    • Try
      • Q(J);CHECK,N_PINP(g)
      • Refutation
        • K(f);P_SPINP(g),S_FLIGHT
    • Try
      • Q(J);CHECK,XP(g)
      • Refutation
        • P(h);XQ(J)
    • Try
      • P(G);CHECK,XP(g)
      • Vars
        • P(h);OGATE,P_SPINP(h)::QAB(J)
      • Refutation
        • B(i);P_SPINB(i)
    • Try
      • P(G);CHECK
      • Refutation
        • B(i);P_SPINB(i)
  • Actual
    • S(F);
    • Threat
      • QAB1(J)
    • Vars
      • K(f);CHECK,N_SPINP(g),S_FLIGHT::R(B)+B(C)
      • K(f);CHECK,N_SPINP(g),P-FLIGHT,XP(G)::R(H)+S(F)
      • P(e);OGATEB::QAR2(J)
      • P(h);::QAB1(J),XP(h)
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