MESON Chess Problem Database

Problem Display
PID: 177907 (1B3N2/2rB4/3k1P1R/4b3/2pPPN2/2p5/5QP1/2KR4 w - - 0 1)

Mironov, Aleksey Fedorovich

2nd Comm., Sahs (Latvia), 1981

1B3N2/2rB4/3k1P1R/4b3/2pPPN2/2p5/5QP1/2KR4

#2

12 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd4
      • 2.Qxd4#
    • 1...Bxf4+
      • 2.Qxf4#
  • Tries
    • 1.Kc2?
      • 1...Bxd4
        • 2.Qxd4#
      • 1...Bxf4
        • 2.Qxf4#
      • 1...Bxf6!
    • 1.Sd5?
      • threat
        • 2.Bxc7#
      • 1...Bf4+
        • 2.Qxf4#
      • 1...Bxd4!
    • 1.S4e6?
      • threat
        • 2.Bxc7#
      • 1...Bf4+
        • 2.Qxf4#
      • 1...Bxf6!
    • 1.S4g6?
      • threat
        • 2.dxe5#
      • 1...Bf4+
        • 2.Qxf4#
      • 1...Bxd4
        • 2.Qxd4#
      • 1...Bxf6
        • 2.Qxf6#
      • 1...Bg3
        • 2.Qxg3#
      • 1...Bh2!
    • 1.Rh5?
      • threat
        • 2.dxe5#
      • 1...Bxf4+
        • 2.Qxf4#
      • 1...Bxd4
        • 2.Rxd4#
        • 2.Rd5#
        • 2.Qxd4#
      • 1...Bxf6!
    • 1.Qe3?
      • 1...Bxd4
        • 2.Qxd4#
      • 1...Bxf4
        • 2.Qxf4#
      • 1...c2
        • 2.Qa3#
      • 1...Bxf6!
  • Keys
    • 1.Qg3!
      • 1...Bxf4+
        • 2.Qxf4#
      • 1...Bxd4
        • 2.S4e6#
      • 1...Bxf6
        • 2.Sd5#
      • 1...c2
        • 2.Qa3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(c);OGATE,P_SPINB(c),XP(E)::QAR2(C),XB(c)
    • B(c);CHECK,OGATE,XS(G)::QAB(C),XB(c)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • B(c);OGATE,P_SPINB(c),XP(E)::QAR2(C),XB(c)
        • B(c);OGATE,XS(G)::QAB(C),XB(c)
      • Refutation
        • B(c);P_SPINB(c),XP(H)
    • Try
      • S(G);
      • Threat
        • B(K),XR(e)
      • Vars
        • B(c);CHECK,OGATEB::QAB(C),XB(c)
      • Refutation
        • B(c);XP(E)
    • Try
      • S(G);
      • Threat
        • B(K),XR(e)
      • Vars
        • B(c);CHECK,OGATEB::QAB(C),XB(c)
      • Refutation
        • B(c);XP(H)
    • Try
      • S(G);
      • Threat
        • R(B)+P(E)DCHECK,XB(c)
      • Vars
        • B(c);CHECK,OGATEB::QAB(C),XB(c)
        • B(c);OGATE,P_SPINB(c),XP(E)::QAR2(C),XB(c)
        • B(c);OGATE,XP(H)::QAR2(C),XB(c)
        • B(c);OGATEB::QAB(C),XB(c)
      • Refutation
        • B(c);
    • Try
      • R(I);
      • Threat
        • R(B)+P(E)DCHECK,XB(c)
      • Vars
        • B(c);CHECK,OGATE,XS(G)::QAB(C),XB(c)
      • Refutation
        • B(c);XP(H)
    • Try
      • Q(C);
      • Vars
        • B(c);OGATE,P_SPINB(c),XP(E)::QAR2(C),XB(c)
        • B(c);OGATE,P_PINQ(C),XS(G)::QAB(C),XB(c)
        • P(a);OGATE::QAB(C)
      • Refutation
        • B(c);P_SPINB(c),XP(H)
  • Actual
    • Q(C);
    • Vars
      • B(c);CHECK,OGATE,P_SPINB(c),XS(G)::QAB(C),XB(c)
      • B(c);P_SPINB(c),XP(E)::QAB(C)+S(G)
      • B(c);P_SPINB(c),XP(H)::QAB(C)+S(G)
      • P(a);OGATE::QAB(C)
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