MESON Chess Problem Database

Problem Display
PID: 231047 (4R3/2Ppqp2/3P1P2/KN2P1Qp/BN2k3/3p1p2/3P1Rp1/8 w - - 0 1)

Sayman, Umut

ChessStar, 2019

4R3/2Ppqp2/3P1P2/KN2P1Qp/BN2k3/3p1p2/3P1Rp1/8

#2

12 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd6
      • 2.exd6#
    • 1...Qxf6
      • 2.exf6#
    • 1...Qxe5
      • 2.Rxe5#
      • 2.Qxe5#
  • Tries
    • 1.Sd4?
      • threat
        • 2.Qe3#
      • 1...Qxe5+
        • 2.Qxe5#
      • 1...Kxd4!
    • 1.Bd1?
      • threat
        • 2.Bxf3#
      • 1...Qxf6
        • 2.exf6#
      • 1...g1S!
    • 1.Bb3?
      • threat
        • 2.Bd5#
      • 1...Qxd6
        • 2.exd6#
      • 1...Qe6!
    • 1.Re2+?
      • 1...dxe2
        • 2.Bc2#
        • 2.d3#
      • 1...fxe2!
    • 1.Rxf3?
      • threat
        • 2.Re3#
        • 2.Rf4#
        • 2.Qe3#
        • 2.Qf4#
        • 2.Qf5#
      • 1...Qxf6
        • 2.Re3#
        • 2.Qe3#
      • 1...g1Q
        • 2.Rf4#
        • 2.Qf4#
        • 2.Qf5#
      • 1...g1B
        • 2.Rf4#
        • 2.Qf4#
        • 2.Qf5#
      • 1...Qe6
        • 2.Re3#
        • 2.Rf4#
        • 2.Qe3#
        • 2.Qf4#
      • 1...Kxf3!
  • Keys
    • 1.Bc2!
      • threat
        • 2.Bxd3#
      • 1...Qxd6
        • 2.exd6#
      • 1...dxc2
        • 2.d3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • Q(g);OGATE,XP(I)::R(L)+P(G),XQ(g)
    • Q(g);OGATE,XP(J)::R(L)+P(G),XQ(g)
  • Tries
    • Try
      • S(F);
      • Threat
        • QAR1(H)
      • Vars
        • Q(g);CHECK,OGATE,P_SPINQ(g),XP(G)::QAR1(H),XQ(g)
      • Refutation
        • K(d);P-FLIGHT,XS(F)
    • Try
      • B(C);
      • Threat
        • B(C),XP(c)
      • Vars
        • Q(g);OGATE,XP(J)::R(L)+P(G),XQ(g)
      • Refutation
        • P(a);
    • Try
      • B(C);
      • Threat
        • B(C)
      • Vars
        • Q(g);OGATE,XP(I)::R(L)+P(G),XQ(g)
      • Refutation
        • Q(g);
    • Try
      • R(B);CHECK
      • Refutation
        • P(c);XR(B)
    • Try
      • R(B);XP(c)
      • Threat
        • DUALS(5)
      • Refutation
        • K(d);S_FLIGHT,XR(B)
  • Actual
    • B(C);P_PINP(b)
    • Threat
      • B(C),XP(b)
    • Vars
      • Q(g);OGATE,XP(I)::R(L)+P(G),XQ(g)
      • P(b);N_SPINP(b),OGATE,XB(C)::P(A)
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