MESON Chess Problem Database

Problem Display
PID: 238258 (2R3K1/5Q1p/3p2Rp/3Nb3/4kp2/4pN2/b1n1B3/8 w - - 0 1)

Murashev, Pavel Aleksandrovich

1st Prize, Pat a Mat, 2018

2R3K1/5Q1p/3p2Rp/3Nb3/4kp2/4pN2/b1n1B3/8

#2

7 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bc3
      • 2.Sxc3#
    • 1...Sd4
      • 2.Sc3#
  • Tries
    • 1.Sf6+?
      • 1...Kf5
        • 2.Sh4#
        • 2.Bd3#
      • 1...Bxf6!
    • 1.Rxd6?
      • threat
        • 2.Qxh7#
      • 1...Bxd6
        • 2.Sc3#
      • 1...Bg7
        • 2.Qxf4#
      • 1...Sd4
        • 2.Sc3#
      • 1...Bxd5!
    • 1.Rc4+?
      • 1...Bd4
        • 2.Sc3#
        • 2.Qe6#
      • 1...Sd4
        • 2.Sc3#
      • 1...Bxc4!
    • 1.Qf5+?
      • 1...Kxf5
        • 2.Bd3#
      • 1...Kxd5!
    • 1.Qxh7?
      • threat
        • 2.Rxd6#
      • 1...Bxd5+
        • 2.Re6#
      • 1...Kxd5
        • 2.Qb7#
      • 1...Kf5
        • 2.Bd3#
      • 1...Bf6
        • 2.Rg5#
      • 1...Sd4!
  • Keys
    • 1.Re6!
      • threat
        • 2.Sc3#
      • 1...Kxd5
        • 2.Rxe5#
      • 1...Bxd5
        • 2.Qxh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(f);N_GUARD::S(C),XB(f)
    • S(b);S_CUTB(f)::S(C)
  • Tries
    • Try
      • S(C);CHECK,P_SPINQ(E)
      • Refutation
        • B(f);XS(C)
    • Try
      • R(D);XP(g)
      • Threat
        • QAB(E),XP(i)
      • Vars
        • B(f);N_GUARD,XR(D)::S(C)
        • B(f);N_GUARD::QAR1(E),XP(e)
        • S(b);S_CUTB(f)::S(C)
      • Refutation
        • B(a);P_PINQ(E),XS(C)
    • Try
      • R(F);CHECK
      • Vars
        • S(b);P_SPINS(b)::S(C)
      • Refutation
        • B(a);XR(F)
    • Try
      • Q(E);CHECK,P_SPINS(C)
      • Vars
        • K(d);S_FLIGHT,XQ(E)::B(A)
      • Refutation
        • K(d);P_SPINB(f),S_FLIGHT,XS(C)
    • Try
      • Q(E);P_SPINS(C),XP(i)
      • Threat
        • QAB(E)+R(D),XP(g)
      • Vars
        • B(a);CHECK,SBLOCK,XS(C)::QAB(E)+R(D)
        • K(d);OGATEB,S_FLIGHT,XS(C)::QAB(E)
        • K(d);S_FLIGHT::B(A)
        • B(f);::QAB(E)+R(D)
      • Refutation
        • S(b);
  • Actual
    • R(D);P_PINB(f)
    • Threat
      • S(C)
    • Vars
      • K(d);N_SPINB(f),S_FLIGHT,XS(C)::QAB(E)+R(D),DCHECK,XB(f)
      • B(a);SBLOCK,XS(C)::QAB(E),XP(i)
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