MESON Chess Problem Database

Problem Display
PID: 261854 (qB3b2/NP3Q1B/p2P1p2/KN2kr2/1P5r/4PbP1/2PP4/8 w - - 0 1)

Murashev, Pavel Aleksandrovich

The Problemist, 2022

qB3b2/NP3Q1B/p2P1p2/KN2kr2/1P5r/4PbP1/2PP4/8

#2

13 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qe6#
    • 1...Re4
      • 2.Sc6#
    • 1...Be4
      • 2.d4#
  • Tries
    • 1.Sc6+?
      • 1...Ke4
        • 2.Qc4#
        • 2.Qe6#
      • 1...Bxc6!
    • 1.Bg8?
      • threat
        • 2.Qe6#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Ke4!
    • 1.Qe8+?
      • 1...Kd5
        • 2.Bg8#
      • 1...Be7!
    • 1.Qe7+?
      • 1...Kd5
        • 2.Bg8#
      • 1...Bxe7!
    • 1.d4+?
      • 1...Ke4
        • 2.Qe6#
      • 1...Rxd4!
    • 1.e4?
      • threat
        • 2.Qd5#
      • 1...Kxe4
        • 2.Qe6#
      • 1...Rxe4
        • 2.Sc6#
      • 1...Bxe4
        • 2.d4#
      • 1...Qxb7!
  • Keys
    • 1.Sc7!
      • threat
        • 2.Qe6#
      • 1...Ke4+
        • 2.Qd5#
      • 1...Kxd6+
        • 2.Scb5#
      • 1...Bd5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • K(c);N_GUARD,P-FLIGHT,P_PINS(G),P_SPINR(d)::QAR2(K)
    • R(b);SBLOCK,S_CUTB(a)::S(I)
    • B(a);SBLOCK,S_CUTR(b)::P(B)
  • Tries
    • Try
      • S(I);CHECK
      • Refutation
        • B(a);XS(I)
    • Try
      • B(L);
      • Threat
        • QAR1(K)
      • Vars
        • B(a);N_GUARD::QAR1(K),XB(a)
      • Refutation
        • K(c);P-FLIGHT,P_PINS(G)
    • Try
      • Q(K);CHECK
      • Vars
        • K(c);P-FLIGHT,S_CUTB(h)::B(L)
      • Refutation
        • B(h);P_SPINB(h)
    • Try
      • Q(K);CHECK
      • Vars
        • K(c);P-FLIGHT,S_CUTB(h)::B(L)
      • Refutation
        • B(h);XQ(K)
    • Try
      • P(B);CHECK
      • Vars
        • K(c);N_GUARD,P-FLIGHT,P_PINS(G),P_SPINR(d)::QAR2(K)
      • Refutation
        • R(b);XP(B)
    • Try
      • P(C);
      • Threat
        • QAR1(K)
      • Vars
        • K(c);N_GUARD,P-FLIGHT,P_PINS(G),P_SPINR(d),XP(C)::QAR2(K)
        • R(b);SBLOCK,XP(C)::S(I)
        • B(a);SBLOCK,XP(C)::P(B)
      • Refutation
        • Q(g);XP(J)
  • Actual
    • S(G);
    • Threat
      • QAR1(K)
    • Vars
      • K(c);CHECK,P-FLIGHT,P_SPINR(d),S_CUTB(a)::QAB1(K)
      • K(c);CHECK,S_FLIGHT,XP(H)::B(M)+S(G),DCHECK
      • B(a);N_GUARD::QAR1(K),XB(a)
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Developed and maintained by Brian Stephenson.
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