MESON Chess Problem Database

Problem Display
PID: 21177 (B1r1r3/2pR4/4Q3/2BP1bbq/N4pn1/N1Pk2p1/1P6/4K1R1 w - - 0 1)

Bettmann, Henry Wald

Good Companions (January), 1917

B1r1r3/2pR4/4Q3/2BP1bbq/N4pn1/N1Pk2p1/1P6/4K1R1

#2

11 + 10

3132 The Good Companion Two-Mover 1922

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe6+
      • 2.dxe6#
    • 1...Rd8
      • 2.Qxf5#
      • 2.Qe2#
    • 1...Rf8
      • 2.Qe2#
    • 1...Rg8
      • 2.Qxf5#
      • 2.Qe2#
    • 1...Rh8
      • 2.Qxf5#
      • 2.Qe2#
    • 1...Be4
      • 2.Qa6#
    • 1...Bxe6
      • 2.dxe6#
    • 1...Be7
      • 2.Qe2#
    • 1...Se5
      • 2.Qxf5#
    • 1...c6
      • 2.dxc6#
  • Tries
    • 1.Bf2?
      • threat
        • 2.Sc5#
      • 1...Rxe6+
        • 2.dxe6#
      • 1...Be7
        • 2.Qe2#
      • 1...c5
        • 2.dxc5 ep#
      • 1...gxf2+!
  • Keys
    • 1.Ba7!
      • threat
        • 2.Sc5#
      • 1...Rxe6+
        • 2.dxe6#
      • 1...Bxe6
        • 2.dxe6#
      • 1...Se5
        • 2.Qxf5#
      • 1...Be4
        • 2.Qa6#
      • 1...Be7
        • 2.Qe2#
      • 1...c5
        • 2.dxc5 ep#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(j);CHECK,OGATE,XQ(I)::R(J)+P(H),XR(j)
    • R(j);N_GUARD,N_PINQ(I)::QAB1(I)
    • B(e);N_PINQ(I),SBLOCK::QAB(I)
    • B(e);OGATE,XQ(I)::R(J)+P(H),XB(e)
    • B(f);N_PINQ(I),S_CUTR(j)::QAB1(I)
    • S(d);N_PINQ(I)::QAB(I),XB(e)
    • P(h);OGATE::R(J)+P(H),XP(h)
  • Tries
    • Try
      • B(G);
      • Threat
        • S(F)
      • Vars
        • R(j);CHECK,OGATE,XQ(I)::R(J)+P(H),XR(j)
        • B(f);N_PINQ(I),S_CUTR(j)::QAB1(I)
        • P(h);OGATE::R(J)+P(H),XP(h),EP
      • Refutation
        • P(b);CHECK,XB(G)
  • Actual
    • B(G);
    • Threat
      • S(F)
    • Vars
      • R(j);CHECK,OGATE,XQ(I)::R(J)+P(H),XR(j)
      • B(e);OGATE,XQ(I)::R(J)+P(H),XB(e)
      • S(d);N_PINQ(I)::QAB(I),XB(e)
      • B(e);N_PINQ(I),SBLOCK::QAB(I)
      • B(f);N_PINQ(I),S_CUTR(j)::QAB1(I)
      • P(h);OGATE::R(J)+P(H),XP(h),EP
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